Raisin Sauce for Baked Ham

1/2 cup brown sugar
1 tsp. dry mustard
1 Tbsp. flour
2 Tbsp. vinegar
2 Tbsp. lemon juice
1 1/2 cups water
1/4 tsp. grated lemon rind
1/2 cup seedless raisins

Mix together brown sugar, dry mustard, and flour. Slowly add vinegar and lemon juice. Add remaining ingredients and cook until thick.