Shoo-Fly Pie

Ingredients

• 1 c. flour
• 1/4 tsp. salt
• 1/4 tsp. cinnamon
• 1/8 tsp. nutmeg
• 1/8 tsp. cloves
• 1/8 tsp. ginger
• 2/3 c. brown sugar
• 3 Tbsp. butter
• 1/3 c. dark molasses
• 1 egg yolk
• 1/2 tsp. soda
• 1 c. boiling water