Mustard soup from Amsterdam
Amsterdam mosterdsoep
1 liter / 1 quart water
1 large onion
2 fish bouillon cubes
40 grams margarine
40 grams / 6 tbsp flour
6 heaping tbsp mustard
6 tbsp light cream
4 tsp capers
vinegar
pepper
1/16 leek, in thinnest rings
150 grams shrimps or prawns
Finely chop the onion. Heat the margarine in a large skillet and sautée
the onions. Mix in the sifted flour and heat thoroughly. Bit by bit
add the water and stir often. Add the crumbled bouillon cubes at the
same time and stir until the mix is smooth.
Put the mustard in a bowl, add the cream and stir well. Add to the soup
and mix in the capers. Pour in a dash of vinegar and add fresh pepper
to taste. Add the shrimps or prawns and heat for five minutes, without
boiling. Just before serving, add the leek rings.

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