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Substitutions · 96 dishes here use it
Out of soda
Carbonation is a texture and it is the first thing you lose. Build in the glass, pour it down the side, and stir once at most — every extra stir is bubbles you paid for and threw away.
Everything below is judged against that job. A swap that covers it is a swap; one that only looks similar is not.
17 of the 96 dishes here that mention soda list it as optional — 18% of them. In those, the correct substitution is nothing.
Functional substitution system
Replace the job, then correct the side effects
For soda, the page's working definition is: Carbonation is a texture and it is the first thing you lose. Build in the glass, pour it down the side, and stir once at most — every extra stir is bubbles you paid for and threw away. The swap cards below are judged against that job rather than visual resemblance.
Job → candidate → side effects → small test → correct.
1 · Job
What is the missing ingredient doing?
2 · Candidate
Choose the shelf item that replaces that function.
3 · Side effects
Check water, fat, salt, acid, sweetness, and texture.
4 · Small test
Change a spoonful or small portion first when possible.
5 · Correct
Taste again and move only the axis that is still wrong.
The bubbles and the same dilution, which is the mechanical half of the job.
What it costs you
It is sweet and bitter. Any drink you build on it needs less sugar and will taste of quinine whether that suits it or not.
Instead · 2
sparkling mineral water
one for one
What it gets you
Everything soda water does, and often with a firmer bead that holds up longer in the glass.
What it costs you
A faint mineral taste, which in a delicate highball is noticeable and in most drinks is not.
What none of them do
Flat water is not a substitute. The bubbles are carrying aroma up out of the glass, and a highball made with still water is a diluted drink rather than a long one.
Where you can just leave it out · 17
These dishes list soda as optional. They were written to work without it, so no ratio is needed and nothing has to be bought.
The company soda keeps in this library, counted off required ingredients. A swap that argues with the top two is the wrong swap, whatever a chart says.