|Mild cheddar cheese||200 Milliliter|
|Dry mustard||2 Milliliter|
|Canned tomatoes||540 Milliliter|
Place in a 10-cup (2.5 L) microwave-safe bowl the potatoes, onions, celery, water and salt.
Cover and microwave at HIGH 15 to 18 minutes or until vegetables are tender.
Stir twice during cooking.
Place the butter in a 4-cup (1 L) microwave-safe bowl and melt 1 minute at HIGH.
Stir in the flour.
Mix well and add the milk.
Microwave at HIGH 6 to 8 minutes, stirring twice.
When creamy, add the grated cheese, dry mustard, savory and the grated lemon rind.
Stir well and add to the cooked vegetables.
(Do not drain; the water is part of the soup.) Add tomatoes and sugar.
Salt and pepper to taste.
Microwave at HIGH 10 minutes, stirring twice.
To serve, garnish with chopped parsley.