Midwest Chowder - boiling water

Ingredients

• 2 c. boiling water
• 2 c. chopped potatoes
• 1/2 c. carrot slices
• 1/2 c. celery slices
• 1/4 c. chopped onion
• 1 1/2 tsp. salt
• 1/4 tsp. pepper
• 1/4 c. margarine
• 1/4 c. flour
• 2 c. milk
• 2 1/2 c. (10 oz.) shredded sharp Cheddar cheese
• 1 (17 oz.) can cream-style corn
• 1 can stewed tomatoes
• 1 can Ro-Tel
• 1 lb. melted Velveeta
• 2 c. cooked rice or more to taste
• 2 to 3 c. chicken stock or more (until desired consistency)