Preheat oven to 325F Grease and flour a 9" tube pan.
Melt chocolate , set aside to cool Sift flour, soda, and salt together. Dissolve coffee in a bit of boiling water, add cold water to equal 1 1/2 cups; add the Jack Daniels and set aside.
Cream butter, vanilla and sugar. Add eggs one at a time, beating well after each addition. Add melted chocolate. On low speed, add the flour alternating with the liquid mixture. It will be a thin batter. Pour into pan and rotate to distribute batter evenly in pan. Bake 1 hour and 10-15 min.
Cool in pan for 15 min before removing.
Optional: drizzle with extra chocolate or make a mixture of powdered sugar, water and 1 tablespoon Jack Daniels.