A verb appearing as G. bas- “bake” in the Gnomish Lexicon of the 1910s (GL/22), based on the early root ᴱ√M(B)ASA “cook, bake” (QL/59).
Neo-Sindarin: For purposes of Neo-Sindarin I would update this verb to ᴺS. basta- “to bake” for better compatibility with the later Quenya verb [ᴹQ.] masta-. I first saw this neologism suggested by Fiona Jallings (FJNS/339).
A verb in The Etymologies of the 1930s glossed “bake” derived from the root ᴹ√MBAS of similar meaning (Ety/MBAS; PE17/51).
Conceptual Development: The Qenya Lexicon of the 1910s instead had ᴱQ. mas- “bake, cook” from the early root ᴱ√M(B)ASA “cook, bake” (QL/59). In that 1910s document it coexisted with ᴱQ. toro- “bake” under the early root ᴱ√TORO (QL/94), but it seems this other root was abandoned. Early Qenya Word-lists had only ᴱQ. mas- with a single gloss “bake” (QL/94). The verb became masta- “bake” in The Etymologies of the 1930s, as noted above.