Grandma's Frosted Molasses Cookies

Ingredients

• 1/2 cup sugar
• 1/2 cup softened butter
• 1/2 cup molasses
• 1/2 cup sour cream
• 1 1/2 tsp baking soda
• 1 1/2 tbsp white vinegar
• 1 tsp ginger
• 1/4 tsp salt
• 2 eggs, beaten
• 2 cups unbleached flour, sifted
• 1 cup packed powdered sugar, sifted
• 2 3/4 tbsp milk
• 1 tsp butter
• 1/2 tsp lemon extract
• 1 1/2 tbsp milk, extra hot