It is a matter of personal preference using cashew or almond milk, each have slightly different qualities. If cooked at too high a temperature, or for too long, the eggnog may look like it’s curdling.
Easy to do: save it by putting it in a blender, for that perfect creamy texture. Or try straining to filter out any undesired lumps.
Consider trying the Healthy Chocolate Eggnog Variation if you love a rich cocoa flavour!