What's the Kennection? #400

What would you add to orange juice to make a mimosa, or to lemonade to make a "lemosa"?

What does the letter 'B' stand for in the public transportation acronym BART?

What substance is applied very thickly in the impasto technique, and very quickly in the prestezza technique?

In Longfellow’s "The Village Blacksmith," the village smithy stands under what kind of "spreading" tree?

What Ford subcompact car was recalled in 1978 due to reports that it burst into flames during rear-end collisions?

What's the "Kennection"?