Salt-Lemon Squash (塩レモンスカッシュ, Shio Remon Sukasshu)

A lemon at its best needs very little help. Salt, sugar, cold soda. This is the plain answer to a hot day, the kind of drink that looks almost too simple until the first sip tells you the balance was the whole point.

The one detail that decides it is the salt-lemon base, shio remon: lemon sliced thin, packed with salt, and left until the peel softens and the juice turns fragrant. Salt doesn't make the drink taste salty when used properly. It pulls out the lemon's oils, rounds the bitterness of the pith, and gives the sugar something to stand against. Without it, you have sweet lemonade with bubbles. With it, the glass has a clean edge.

Mash the preserved lemon with sugar before the soda goes in. Do it in the chilled glass, and don't be delicate about it. You want the sugar to scrape the peel a little and pull the syrup into the bottom of the glass. Add ice, then soda, and stir only enough to lift the syrup. Stir like you're angry and the sparkle leaves the room. Even a drink has manners.

This belongs to summer and to the easy side of the Japanese table: after a quick meal, outside with bentō, or beside something grilled and salty. Use unwaxed lemons if you can, because the peel is the flavor here. Nothing hidden, nothing dressed up. The real thing is lemon, salt, sugar, cold bubbles, and restraint.