[bluGill]

Do they? Food stamps in most states have restrictions on what you can buy with them. My impression is soda is not on the list. Of course this is (mostly?) the states and every state has different rules so you probably need to cite 50 different state rules to verify this and thus an exception state is likely.

[mtalantikite]

This is an ongoing debate, but afaik you can use them for soda [1].

[1] https://www.nytimes.com/2017/01/13/well/eat/food-stamp-snap-...