I've already cleaned up, so no pictures. BUT.....
I made a porter today. It'll be 1-1/2 gallons total. Aside from the steeping grains,
I put 4# Amber LME and 1 full cup of sugar...wanted to make it nice and strong.
To give it a little extra "real" coffee flavor, I put one heaping tablespoon of decaf
coffee in. (I have a big tea strainer to get the grounds out...so wasn't worried
about that problem).
The problem I did not foresee was the coffee interacting with all that sugar and
creating a giant foam on top of the brew. Before I realized it was happening,
foam spilled out over all edges, coating the outside of the pot with sugary, sticky
foam and coffee grounds (and some of the hops, unfortunately), and go all over
the burner on the stove.
Ugh. What a mess it was, let me tell you. Managed to save the brew and finish
the boil.