I was out of marmalade (for my peanut butter-and-marmalade toast), and I found a can of the good stuff at the British Pantry store in Redmond. (Redmond is across Lake Washington from Seattle, and is where the sprawling Microsoft campus is).
Marmalade has a centuries-old culinary history. The word first appeared in the English language in 1480, borrowed from the French marmelade which, in turn, came from the Galician-Portuguese word marmelada.
The preferred citrus fruit for marmalade production nowadays, is the Spanish Seville or bitter orange, prized for its high pectin content, which sets readily to the thick consistency expected of marmalade. The bitter taste comes from the peel [all this information from Wikipedia].
