Yes, with the EKM 100 you can also grind caraway and other spices as finely as you like.
1 tsp is probably a little low, but 1-2 tbsp should grind evenly.
As some seeds are very oily, you should grind in small portions and interrupt the grinding occasionally to loosen the ground layers that stick to the edge and push them inwards (towards the blade) with a spatula.
A further note: Essential oils have an effect on plastics. It is therefore possible that the inside of the container lids of spices with intense essential oils (e.g. caraway, cloves, etc.) may have a dull surface. This can also be the case with our EKM 100 coffee grinder. However, this does not affect the functionality.