The only free and comprehensive online etymological dictionary of the Spanish language
yesca f. (Noun) "tinder"
13th cent. From Vulgar Latin *esca "kindling." From Latin esca "food," from esse "to eat." From Proto-Italic *ed- "to eat" (see note under comer for a continuing etymology).
Indo-European
Romance
Asturian yesca, Portuguese isca, Galician esca, Catalan esca, French esche, Italian esca, Aromanian eascã, Romanian iască
Italic
Oscan edum "to eat"
Celtic
Old Irish ithid "to eat"
Germanic
Gothic itan "to eat," Old Norse eta 'id.,' Old High German ezzan 'id.,' Old Saxon etan 'id.,' Old English etan 'id.' (English to eat)
Balto-Slavic
Old Church Slavonic jasti "to eat," Russian est' 'id.,' Czech jísti 'id.,' Polish jeść 'id.,' Slovene jẹ́sti 'id.,' Old Prussian īst 'id.,' Lithuanian ė́sti 'id.,' Latvian êst 'id."
Hellenic
Ancient Greek ἔδειν (édein) "to eat"
Armenian
Armenian owtem "to eat
Indo-Iranian
Sanskrit ádmi "I eat"
Tocharian
A nätsw- "to starve," B mätsts- 'id.'