What must I eat while in Dutchland?

Today I spoke to a shopkeeper and I asked what sort of dutch food that I should try. However, it has to be dairy free based. I was asked to sample 'kroket. It's basically deep fried croquet made of flour, and inside it has sauce with some beef pieces. I felt it's more like snack and for me it's a bit saltish.

Then my friend told me I must tried their famous pea soup or known as Erwtensoep. It's basically thick pea soup and served with cut sausage. It's yummy but really filling.