Make this recipe a recipe that people in that category can eat. categories: ['vegetarian'], recipe: in a large saucepan,heat oil add celery, carrots and onions. saute for about 10 minutes stirring often. add chicken broth and heat to boiling then reduce heat. cover and simmer for 10 minutes. combine milk, flour and salt. stir into the broth. cook and stir til thickened. add the cheese and stir til melted.

Target recipe: sift the flour, mustard powder, salt and cayenne pepper into a bowl. cut the butter into the flour and rub in until the mixture resembles fine breadcrumbs. add the cheese and mix the ingredients together. mix to a stiff paste with the egg yolk and water. turn out onto a floured work surface. knead quickly until smooth and crack-free. wrap in a polyethylene bag or foil. chill for 30 minutes before using. roll out, cut into strips and place on a baking sheet. bake at 200 c / 400 f / gas 6 for 15 minutes until golden brown.