Friend keeps making jokes about my ethnicity which are not funny

My parents are from India, but I was born and raised in the Netherlands (which is where I still live). I am in university and a friend keeps making jokes about the fact that I am of Indian descent. The problem is, the jokes are simply not funny. Although I am not offended by them, I don’t know how to make him stop.

For example, when I was eating my sandwich and he asked whether I have ghee on my sandwich instead of butter or paneer instead of cheese, while he could clearly see that it was regular cheese (it was Gouda if I recall correctly).
And another time he asked whether I knew some random Indian person he saw on the train. Now we get along quite well otherwise, but his jokes are really not funny.
How do I make him stop?

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Question: Why do females make sexist jokes against their own gender?

Question: Why do females make sexist jokes against their own gender?

Question: Why do females make sexist jokes against their own gender?

I saw a group of people who wrote stuff like “Men mature slower than women because creating a masterpiece takes time” or “Women are only dishwashers, get back in the kitchen!” or “Women are worse than humans” or “Women are less intelligent so they should just stay at home” and guess what? All of the people who wrote them were women! It sounds weird, but it is true. Do women like it when people tell such jokes? Or are everybody against women nowadays?

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