What was cooking at the Utility Muffin Research Kitchen?

Hot tunes, one imagines.

The Utility Muffin Research Kitchen (UMRK) is a recording studio established by Frank Zappa at his home in Los Angeles, California. Zappa's estate, including the UMRK, was bought by Lady Gaga in 2016.

https://en.m.wikipedia.org/wiki/Utility_Muffin_Research_Kitchen

The Muffin Man is seated at the table In the laboratory of the Utility Muffin Research Kitchen...
Reaching for an oversized chrome spoon He gathers an intimate quantity of dried muffin remnants!
And, brushing his scapular aside Proceeds to dump these inside of his shirt: "Some people like cupcakes better.
I, for one care less for them!" Arrogantly twisting the sterile canvas snoot Of a fully charged
icing-anointment utensil He poots forth a quarter-ounce green rosette Near- ha, ha Let's try
that again-He poots forth a quarter-ounce green rosette Near the summit of a dense-but-radiant
muffin Of his own design Later he says: "Some people, some people like cupcakes exclusively
While I myself I say there is naught Nor ought there be nothing so exalted On the face of God's grey earth
As that Prince of foods... the Muffin!"

Excerpt from "Muffin Man" by Frank Zappa