Any ideas what the dapur is?

[A. G. Maisey]

Any keris with a longish gandhik has either "kebo" or "mahisa" (maesa) as a part of the name, both words (there are spelling variations) mean "kerbau", "water buffalo", just different language levels.

Have a look at drawing #4 in the pakem.

Incidentally, although this book is probably the best guide we have, there is not universal agreement on everything between its covers.