1/4 c. butter
1/2 c. onion, diced
1/2 c. carrots, diced
1/2 c. celery, diced
1/4 c. flour
1 1/2 tbsp. cornstarch
1 qt. chicken broth
1 qt. milk
1 c. grated cheese (Cheddar)
1/8 tsp. baking soda
2 tbsp. parsley
Salt & pepper

Melt butter. Add vegetables and saute over low heat until soft. Add flour and cornstarch, cook until bubbly. Add broth and milk to make a smooth sauce. Add soda and Cheddar cheese, stir until melted. Season to taste. Top with a sprinkle of parsley.