Is pancake batter a homogeneous or heterogeneous?

Pancake batter is a heterogeneous mixture.

A heterogeneous mixture is a mixture in which the components are not evenly distributed throughout the mixture. In other words, the composition of the mixture is not uniform. Pancake batter is a heterogeneous mixture because the flour, water, and other ingredients are not evenly distributed throughout the batter. The flour tends to settle at the bottom of the bowl, while the water and other ingredients float to the top.