underbeaten
Not mixed enough
Underbeaten describes something that hasn't been mixed or whipped enough.
The term appears almost exclusively in cooking and baking, where properly beaten ingredients—eggs, cream, batter—develop specific textures.
Underbeaten egg whites won't hold stiff peaks; underbeaten batter may be lumpy: The cake fell because the eggs were underbeaten.
lumpy
Having irregular bumps
streaky · watery · loose · flat · dense · heavy · deflated · separated · curdled · grainy
meringue
Baked whipped whites
whipping · undermixed · volume · airy · glossy · foamy · peaks · collapse · grainy · weepy
underbeatenoverbeaten
Mixed beyond ideal texture
overmixed · overworked · well-beaten · overwhipped · overstirred
under, beat, beaten, beats, beating, beater, beaters, unbeaten, overbeaten