Take 1 stick butter and 1/2 brick cream cheese (about 4 ounces). Blend.
Blend in 1/4 tsp vanilla, and 1/2 tsp (or more!) lemon oil, NOT lemon extract. Pinch salt.
Blend in 1/3 cup cocoa powder.
Add, alternating, approx. 1/2 cup milk and 5-6 cups powdered sugar, until thick and spreadable.
Spread between, around and over a dark chocolate cake. The result is something like those orange-cream centre candies in the Russell Stover box.
This makes a big batch of frosting, enough to frost and fill a three- or four-layer cake. For less, add less milk and sugar. Frost only after cake is completely cooled, and store in the refrigerator.
Cake recipe later, if you're good.