"Mixer speed" refers to the rate at which a mixer's blades or beaters rotate during food preparation. It describes how fast or slow the mixer spins, which can affect the blending, whipping, or kneading of ingredients. Full definition
Reduce mixer speed to low and beat in dry ingredients in 3 additions, alternating with coconut milk mixture in 2 additions, beginning and ending with dry ingredients. (epicurious.com)
Beat until the batter is smooth, then increase mixing speed and beat for 4 minutes. (gfjules.com)
On a low mixer speed start to add dry ingredients and coconut milk, alternating between the two. (bake-no-fake.com)