Why do some sodas (coke, root beer) fizz over while others (sprite, mtn dew) don’t even though they seem equally carbonated?
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Some sodas have ingredients that change surface tension (edit: surfactants and other chemical additives) One is actually lactose, the sugar in milk. I used it when I made my own root beer and it creates a really thick foamy head and a slightly creamy texture.
These tend to be the darker sodas as the color of surfactants is hidden by the food coloring. Plus a clear soda is supposed to feel less thick and syrupy as it kind of looks like water so in our minds we want it to feel closer to water than syrup.
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