Sure did!

[Barry beams, raising his cup in a sloppy toast before taking another healthy swig. He's getting a little red around the gills already, so Alphys is in terrific company.]

Th'key is... y'listenin'? [Kneeling next to the chair, Barry leans in close to his employer and friend, a mischievous look on his face as he starts a conspiratory stage whisper.] Y'make punch, right, and y'add th'booze, okay, but then, when y'think you've added enough?

[Another swig.] Y'just add double that.