Scotch and Soda

Around 1:3 is the working ratio, 45 ml of Scotch to 120 of soda, which puts the glass somewhere near the strength of a strong beer. Past 1:4 the whisky slips into the background and you are drinking flavored water. Under 1:2 you may as well pour it neat.

It genuinely changes it. Dropping the alcohol strength lets aroma compounds that were bound up in the ethanol come off the surface, which is why a few drops of water make a dram smell bigger. Soda does the same thing and adds carbonation, which carries aroma upward too.

Big and hard, as few pieces as will fill the glass. Small cubes carry more surface area, melt fast and leave you with a warm, watery second half. Fill the glass right to the top rather than half filling it, since a packed glass melts more slowly than a sparse one.

Not quite. Club soda carries added minerals and reads slightly saline, which suits Scotch. Seltzer is neutral. Mineral waters vary, and some bring a chalky note that clashes with peat. Whichever you use, it has to be aggressively carbonated and straight from the fridge.

A classic Scotch and Soda calls for 45 ml (1.5 oz) Scotch whisky, 120 ml (4 oz) Soda water. That single-serve spec scales cleanly — the recipe above converts it to oz and multiplies it for 2–4 drinks.

A standard Scotch and Soda is roughly 12% ABV once mixed (before ice melt softens it further). That makes it about as strong as a glass of wine.

A Scotch and Soda is built directly in the glass over ice — no shaker required. Add the ingredients in order and give it a brief, gentle stir.