The distilleries themselves now sell imo shochu as a highball. Soda lifts the aroma off the glass instead of burying it.
One part shochu to three or four parts mixer, plenty of ice. If it tastes thin, go two to three next time. That is the whole method.
What it tastes like
Imo shochu from Nishi Shuzo in Kagoshima. Importer's tasting notes: rice, spice, clean, sweet. Nobody here has tasted this one, so the profile below is estimated from what its importer publishes rather than from the glass.
sweet potato
rice
spice
clean
sweet
sharp
aged
koji
Sweet
Body
Aroma
Fruit
Floral
Grain
Earth
Umami
Base
Kogane Sengan sweet potato grown in Kagoshima, with rice
Koji
black koji
Distillation
atmospheric distillation
ABV
25%
Aging
both the first and second fermentation stage
What to mix with it
Tap a family to narrow it down. Every suggestion carries its reasoning, so if the reasoning does not convince you, ignore the suggestion.
Soda water
Strong match
Cold, and fizzy enough to matter. One part spirit to three or four parts soda for shochu; one to one for sake.
Yuzu
Strong match
The Japanese citrus that tastes like grapefruit, mandarin and lemon at once, with a floral peel. A little zest or juice goes a long way.
Ginger beer
Strong match
A spicy one, not a sweet one. The mule format works for every dark shochu and most sake.
Sudachi
Strong match
A small green citrus from Tokushima, sharper and more herbal than lime. Sold frozen or as juice in Japanese markets.
Cold water (mizuwari)
Strong match
Soft water, cold, over ice or not. One to one is normal. Mix a day ahead (maewari) and the edges round off.
Oolong tea
Strong match
Unsweetened, cold. One part shochu to three or four parts tea, over ice. It is the drink half of Japan orders with dinner.
Lemon soda (ramune, Sanpellegrino)
Strong match
The shortcut to a sour when there is no fresh lemon. Less sweet is better.
Tonic water
Strong match
A dry tonic (Fever-Tree, Q). One part spirit, three parts tonic, a citrus wedge.
Ginger ale
Strong match
The gentle ginger. For bottles that a ginger beer would bully.
Green tea (sencha)
Strong match
Cold-brewed sencha, unsweetened. The green tea highball is one of the most common ways shochu is actually drunk in Japan.
Sparkling wine (brut)
Strong match
Dry cava or crémant. Topping sake with it adds the acid and the bubbles sake lacks in one pour.
Kabosu
Strong match
Oita's citrus, softer than sudachi. Bartenders in Oita mix it with the local barley shochu and soda.
Amaro
Good match
Montenegro, Nonino, Averna. Equal parts with a dark shochu over ice is a whole drink.
Aromatic bitters
Good match
Angostura or a Japanese aromatic. Two dashes.
Cinnamon
Good match
A stick in hot water with the spirit, or a light syrup. Winter.
Ginger
Good match
Fresh juice, a syrup, or a good ginger beer. The spice that makes a low-proof drink feel like it has a backbone.
Black tea (Earl Grey)
Good match
Cold-brewed Earl Grey brings bergamot; plain black tea brings tannin. For the aged and brown-sugar bottles.
Jasmine tea
Good match
Cold-brewed. Floral without sugar. The jasmine highball is a real menu item in Japan.
Matcha
Good match
Whisked into a slurry first, never dumped in dry. Bitter, umami and creamy at once.
Amazake (sweet koji rice)
Good match
The non-alcoholic koji drink, sweet from rice starch alone. Blend with the spirit and ice; it is a shochu smoothie.
Kiwi
Good match
Muddled with the seeds. Green, sour and refreshing, and cheap year round.
Passion fruit
Good match
The most useful tropical fruit for mixing: intensely aromatic and properly sour. Pulp with seeds, or a good puree.
Ume (Japanese plum)
Good match
Umeboshi (salt-pickled), ume syrup, or the fruit's own liqueur. Sour, salty and savory at once.
Pickled ginger (gari)
Good match
A spoon of the brine, and a slice as garnish. Sweet, sour and hot at once.
Umeboshi
Good match
One salted plum, crushed with a spoon in the glass. Salty, sour, savory.
Blood orange
Good match
Orange with a raspberry edge. Winter fruit; worth waiting for.
Red aperitivo bitter (Campari-style)
Good match
Campari, Aperol, or a Japanese bitter like Kina. The aperitivo hour is where sake and shochu make the most sense as cocktails.
Cardamom
Good match
A few crushed pods, or a syrup. Floral, citrusy and warm at once; it bridges fruit and spice.
Gentian (Suze-style)
Good match
Suze or Salers. Bitter root, bright yellow. A little in a highball changes everything.
Hot water (oyuwari)
Good match
Hot water in the glass first, spirit poured on top so it mixes itself. Around 40C in the glass is the sweet spot. This is not the only way, it is one way.
Kumquat
Good match
Eaten whole, peel and all. Muddle a few in a glass; the peel gives bitterness, the flesh gives tartness.
Sansho pepper
Good match
A pinch of ground sansho over the top, or a few peppercorns steeped. Numbing, citrusy, green.
Star anise
Good match
One star, steeped, for the dark bottles.
Hojicha
Good match
Cold-brewed or hot. Roasted green tea, low in bitterness, high in toast. The oyuwari of teas.
Mugicha (barley tea)
Good match
Cold, unsweetened barley tea. Every Japanese fridge has a pitcher in summer. Mix one to three over ice.
Mikan (satsuma)
Good match
Sweet, low-acid Japanese mandarin. Juice it or drop segments in a glass. It needs a squeeze of something sharper alongside.
Hibiscus
Good match
Cold-brewed hibiscus tea: sour, cranberry-red and floral. Acid and color in one pour.
Kombucha
Good match
A plain or ginger kombucha. It brings acid, bubbles and funk, all things sake is short of.
Grapefruit
Good match
Bitter, bright and forgiving. Ruby or white both work; white is drier. The grapefruit sour is a real bar order in Japan, not a novelty.
Lemon
Good match
Fresh juice, never bottled. The building block of the lemon sour, and the fastest way to give sake the acidity it does not have on its own.
Osmanthus (kinmokusei)
Good match
Dried osmanthus flowers steeped, or the syrup. Apricot and honey, and the smell of October in Japan.
Wasabi
Good match
A rice-grain amount, dissolved. For the savory, cucumber glass, not the fruit one.
Cranberry
Good match
Unsweetened juice. Sharp and a little tannic, useful for cutting sweetness.
Raspberry
Good match
Sour enough to be useful. Muddle a handful, or use a good puree.
Cucumber
Good match
Ribbons or muddled slices. Cucumber is what turns a glass of sake into something you would drink on a porch.
Fino sherry
Good match
Fino or manzanilla. Savory, salty, bone dry.
Kinome (sansho leaf)
Good match
Young sansho leaves, clapped between the palms and floated. Hard to find outside Japanese markets in spring, worth the hunt.
Kombu
Good match
A small piece steeped in the bottle overnight. Savory depth without salt.
Sake (in a shochu drink)
Good match
A dry junmai as the lengthener for rice shochu, one to two. Low proof, all rice.
Sea salt
Good match
A pinch in the glass or a half rim. Salt does not make a drink salty in small amounts; it makes it taste more like itself.
Shiitake
Good match
A dried shiitake steeped in the spirit for a day. Savory and strange in the best way.
Shiso
Good match
Green shiso leaves, slapped or muddled gently. Red shiso as a syrup. Japan already makes shiso shochu, which tells you it works.
Umeshu
Good match
Sweet, sour, almondy. A splash does the work of both syrup and citrus.
Black pepper
Good match
A few grinds over the top. Aroma more than heat.
Fernet
Good match
A quarter ounce. Menthol and bitterness, for the darkest bottles.
Togarashi (chili)
Good match
A rim of shichimi, or a slice of fresh chili. Heat on fruit, not on rice.
Genmaicha
Good match
Green tea with popped, toasted rice. Cold-brew it. Comfort in a glass.
Dry vermouth
Good match
Dolin dry or Noilly Prat. A quarter of the sake's volume, stirred.
Olive brine
Good match
A bar spoon, no more. Salt, and the savory note that comes with it.
Egg white
Good match
One white, dry-shaken. Texture without flavor.
Jasmine
Good match
A syrup or a few dried blossoms steeped. See jasmine tea for the long drink.
Lime
Good match
Sharper and greener than lemon. The citrus for anything built on brown sugar or tropical fruit.
Sakura (cherry blossom)
Good match
Salt-pickled blossoms (rinsed) or sakura syrup. Floral, faintly almond, a touch of salt.
Apricot
Worth trying
Fresh in season, dried the rest of the year. Apricot and umeshu share a family, which is why they get along.
Basil
Worth trying
Muddled gently with citrus. Thai basil brings anise, Italian basil brings pepper.
Blackberry
Worth trying
Late summer fruit with a savory edge. For the deeper bottles.
Crème de cassis
Worth trying
A bar spoon. Cassis-oolong is one of the most common izakaya orders in Japan.
Cherry
Worth trying
Fresh in early summer; morello or amarena in syrup otherwise. Dark cherry for aged bottles, bright cherry for sparkling.
Coconut
Worth trying
Coconut water for lengthening, coconut milk or cream for weight.
Elderflower liqueur
Worth trying
St-Germain or similar. A half ounce is enough.
Fig
Worth trying
Fresh figs muddled, or fig jam. For the aged and the brown-sugar bottles only.
Lemongrass
Worth trying
Bruised stalks steeped in the spirit, or a syrup. Citrus without acid, which is useful when you want aroma but not sourness.
Lychee
Worth trying
Fresh in early summer, canned in syrup the rest of the year (drain it). The signature aroma of a whole school of imo shochu.
Makrut lime leaf
Worth trying
Torn leaves steeped briefly. Perfumed citrus without juice.
Miso
Worth trying
White miso whisked into a syrup, a small spoon per drink. Salty, sweet and savory at once.
Orange liqueur
Worth trying
Cointreau or a dry curaçao. The sweet-and-citrus half of any sour.
Toasted sesame
Worth trying
A sesame syrup, or a rim of ground sesame and salt. Toasty and rich.
Coffee (cold brew)
Worth trying
Cold brew, unsweetened. For barley, brown-sugar, cask-aged and awamori bottles; it will bury a daiginjo.
Maple syrup
Worth trying
Dark, in small amounts, for the cask and sweet-potato bottles.
Yuzu marmalade (yuja-cha)
Worth trying
The Korean-style yuzu preserve sold in jars. A spoon in hot water with shochu, or shaken cold.
Calpico (cultured milk)
Worth trying
The concentrate, diluted with soda. Yogurt-sweet and sour. The Calpis sour is a national drink in Japan.
Orange
Worth trying
Fresh orange juice for a sparkling sake mimosa; the peel for stirred drinks with aged bottles.
Vanilla
Worth trying
A split bean in a syrup, or a good extract, in small amounts.
Pineapple
Worth trying
Fresh juice, or grilled wedges for a smokier drink. The awamori fruit.
Watermelon
Worth trying
Fresh juice, strained. Add a pinch of salt.
Chamomile
Worth trying
Cold-brewed chamomile as a lengthener, or steeped in the spirit.
Cream
Worth trying
Half-and-half or heavy cream, in the after-dinner glass only.
Elderflower
Worth trying
Cordial or the liqueur. Muscat, lychee and honey in one flower.
Milk
Worth trying
Cold whole milk. Shochu milk-wari is a real order in Kyushu, not a dare.
Oat milk
Worth trying
The dairy-free milk that tastes of cereal, which is why it likes grain spirits.
Rose
Worth trying
A drop of rose water, or a rose syrup. A drop; it takes over.
Ways to serve it
On the rocks
Mizuwari (with water)
Sweet potato shochu is the one people are told they have to drink with hot water. Hot water is genuinely good, and it is also the hardest first sip to sell. Start it long and cold with soda and a wedge of grapefruit, and come back to the hot water once you like the spirit.
Cocktails other people made
Nobody has published a cocktail written for this exact bottle. These were written for other bottles, so each one says which, and what changes if you pour this instead.
Written for Satsuma Kuradashi Genshu Shochu, also a sweet potato shochu. This bottle is lighter, 25% against 37%, so cut the mixer back or it will disappear.