Grog

(Courtesy of The Czechoslovak Cookbook)

Ingredients:
1 c. water
1/4 c. sugar
1 slice of lemon
1/4 c. rum
1 tsp. butter

Directions:
Cook water and sugar together for about 2 minutes.  Add lemon and rum.  Bring to a full boil.  Remove from the heat, add butter.  Stir.  Pour into a glass and serve immediately.