Mix

Culinary definition of mix:  A circular stirring motion used to combine or mix ingredients together.

C@H FOOD FOR THOUGHT
More-or-less the same as 'stir' but conventionally used primarily to describe dense mixtures that don't turn over or move as easily as those that would be stirred - ie: 'stir the soup or the stock' and 'mix the cake batter'. 

Mixing and blending are often used interchangeably, though mixing is generally always a round and round motion.

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