So what’s the difference between liquid food coloring versus a gel/paste or a powder version? And more importantly, why should you care?
Basically the difference between the three types of food coloring is dilution level.
Less liquid = more concentrated color. In general, gel/paste food coloring can be used interchangeably with liquid coloring, you will simply need to use much less (gel/paste colors can be very cost effective!). A powdered color is used most often in applications where water is prohibited, such as in chocolate and dry mixes.