Mizu Shiso Shochu, long, with Ginger ale, and Grapefruit.
The botanical is the whole point of the bottle, so the job of the mixer is to carry it, not to add to 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
Honkaku shochu from Munemasa Shuzo in Saga. Importer's tasting notes: barley, grassy, tea. Nobody here has tasted this one, so the profile below is estimated from what its importer publishes rather than from the glass.
barley
grassy
tea
cask
Sweet
Body
Aroma
Fruit
Floral
Grain
Earth
Umami
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.
Ginger ale
Strong match
The gentle ginger. For bottles that a ginger beer would bully.
Kombucha
Strong match
A plain or ginger kombucha. It brings acid, bubbles and funk, all things sake is short of.
Lemon soda (ramune, Sanpellegrino)
Strong match
The shortcut to a sour when there is no fresh lemon. Less sweet is better.
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.
Tonic water
Strong match
A dry tonic (Fever-Tree, Q). One part spirit, three parts tonic, a citrus wedge.
Ginger beer
Strong match
A spicy one, not a sweet one. The mule format works for every dark shochu and most sake.
Sparkling wine (brut)
Strong match
Dry cava or crémant. Topping sake with it adds the acid and the bubbles sake lacks in one pour.
Hot water (oyuwari)
Strong 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.
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.
Milk
Good match
Cold whole milk. Shochu milk-wari is a real order in Kyushu, not a dare.
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.
Kabosu
Good match
Oita's citrus, softer than sudachi. Bartenders in Oita mix it with the local barley shochu and soda.
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.
Sudachi
Good match
A small green citrus from Tokushima, sharper and more herbal than lime. Sold frozen or as juice in Japanese markets.
Amaro
Good match
Montenegro, Nonino, Averna. Equal parts with a dark shochu over ice is a whole drink.
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.
Aromatic bitters
Good match
Angostura or a Japanese aromatic. Two dashes.
Calpico (cultured milk)
Good match
The concentrate, diluted with soda. Yogurt-sweet and sour. The Calpis sour is a national drink in Japan.
Egg white
Good match
One white, dry-shaken. Texture without flavor.
Gentian (Suze-style)
Good match
Suze or Salers. Bitter root, bright yellow. A little in a highball changes everything.
Lemongrass
Good match
Bruised stalks steeped in the spirit, or a syrup. Citrus without acid, which is useful when you want aroma but not sourness.
Oat milk
Good match
The dairy-free milk that tastes of cereal, which is why it likes grain spirits.
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.
Thyme
Good match
Gentler than rosemary. Steep a sprig, or use a thyme syrup.
Apple
Worth trying
Cold-pressed juice or thin slices. Green apple is the aroma many ginjo sake already carry, so this is amplification rather than addition.
Banana
Worth trying
Ripe banana, muddled or as a syrup. The banana note in ginjo sake is real chemistry, not a metaphor.
Black tea (Earl Grey)
Worth trying
Cold-brewed Earl Grey brings bergamot; plain black tea brings tannin. For the aged and brown-sugar bottles.
Blackberry
Worth trying
Late summer fruit with a savory edge. For the deeper bottles.
Blood orange
Worth trying
Orange with a raspberry edge. Winter fruit; worth waiting for.
Crème de cassis
Worth trying
A bar spoon. Cassis-oolong is one of the most common izakaya orders in Japan.
Celery
Worth trying
Juiced, or a stalk as the stirrer. Savory, salty and cold.
Chamomile
Worth trying
Cold-brewed chamomile as a lengthener, or steeped in the spirit.
Cherry
Worth trying
Fresh in early summer; morello or amarena in syrup otherwise. Dark cherry for aged bottles, bright cherry for sparkling.
Cinnamon
Worth trying
A stick in hot water with the spirit, or a light syrup. Winter.
Cucumber
Worth trying
Ribbons or muddled slices. Cucumber is what turns a glass of sake into something you would drink on a porch.
Dry vermouth
Worth trying
Dolin dry or Noilly Prat. A quarter of the sake's volume, stirred.
Green tea (sencha)
Worth trying
Cold-brewed sencha, unsweetened. The green tea highball is one of the most common ways shochu is actually drunk in Japan.
Honey
Worth trying
Diluted one to one with warm water so it mixes cold. A little goes far; taste before adding more.
Jasmine tea
Worth trying
Cold-brewed. Floral without sugar. The jasmine highball is a real menu item in Japan.
Kokuto (brown sugar) syrup
Worth trying
Okinawan or Amami kokuto dissolved one to one in water. Molasses, minerals, a little salt.
Kumquat
Worth trying
Eaten whole, peel and all. Muddle a few in a glass; the peel gives bitterness, the flesh gives tartness.
Lime
Worth trying
Sharper and greener than lemon. The citrus for anything built on brown sugar or tropical fruit.
Maple syrup
Worth trying
Dark, in small amounts, for the cask and sweet-potato bottles.
Mikan (satsuma)
Worth trying
Sweet, low-acid Japanese mandarin. Juice it or drop segments in a glass. It needs a squeeze of something sharper alongside.
Oolong tea
Worth trying
Unsweetened, cold. One part shochu to three or four parts tea, over ice. It is the drink half of Japan orders with dinner.
Orange
Worth trying
Fresh orange juice for a sparkling sake mimosa; the peel for stirred drinks with aged bottles.
Peach liqueur
Worth trying
A good one (Giffard, Merlet). A shortcut to the bellini when peaches are out of season.
Pickled ginger (gari)
Worth trying
A spoon of the brine, and a slice as garnish. Sweet, sour and hot at once.
Tomato
Worth trying
Good tomato juice, or a ripe tomato muddled and strained. Sake's umami and tomato's are chemically the same thing.
Ume (Japanese plum)
Worth trying
Umeboshi (salt-pickled), ume syrup, or the fruit's own liqueur. Sour, salty and savory at once.
Umeboshi
Worth trying
One salted plum, crushed with a spoon in the glass. Salty, sour, savory.
Umeshu
Worth trying
Sweet, sour, almondy. A splash does the work of both syrup and citrus.
Vanilla
Worth trying
A split bean in a syrup, or a good extract, in small amounts.
Yuzu
Worth trying
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.
Yuzu marmalade (yuja-cha)
Worth trying
The Korean-style yuzu preserve sold in jars. A spoon in hot water with shochu, or shaken cold.
Yuzu liqueur (yuzushu)
Worth trying
Sweet yuzu liqueur, usually on a sake or shochu base. A shortcut to yuzu when the fruit is out of season.
Amazake (sweet koji rice)
Worth trying
The non-alcoholic koji drink, sweet from rice starch alone. Blend with the spirit and ice; it is a shochu smoothie.
Basil
Worth trying
Muddled gently with citrus. Thai basil brings anise, Italian basil brings pepper.
Cream
Worth trying
Half-and-half or heavy cream, in the after-dinner glass only.
Dill
Worth trying
Fronds, gently muddled. For the savory, saline glass.
Fernet
Worth trying
A quarter ounce. Menthol and bitterness, for the darkest bottles.
Kinome (sansho leaf)
Worth trying
Young sansho leaves, clapped between the palms and floated. Hard to find outside Japanese markets in spring, worth the hunt.
Makrut lime leaf
Worth trying
Torn leaves steeped briefly. Perfumed citrus without juice.
Mint
Worth trying
Slapped, not muddled to bits. Mint reads as cold, which makes any low-proof drink feel more refreshing.
Ways to serve it
With soda
On the rocks
These are shochu with one loud idea in them, shiso or sesame or green tea. Treat the botanical as the drink's flavour and everything else as its frame, and do not try to add a second loud idea.