It's a spray, I have this liqueur specially for such cases))) but to add it at all, not necessarily just with him the biscuit will be more fragrant.
In sour cream add soda and wait until the mass becomes lush (sour cream will extinguish the soda)
In sour cream add eggs, condensed milk, a tablespoon of oil, a spoonful of liquor and mix well.
Add flour and mix, the dough should be in consistency as a thick sour cream. Pour into a mold greased with vegetable oil and send in the oven.
Biscuit is baked for a long time 20-25 minutes at a temperature of 200 degrees, but of course be guided by your oven. When baking a biscuit will rise strongly when it is well browned, check the readiness with a match, if the biscuit is not yet baked, I usually cover it with foil and slightly lower the temperatureWell all Cake is ready! We invite everyone to drink tea.