What is a punchki?

"Punchki" is likely a misspelling of "pączki", a Polish word that refers to a type of donut.

Pączki are traditionally eaten during Fat Tuesday, the day before Ash Wednesday, which marks the beginning of Lent. They are often filled with jam, custard, or fruit preserves, and are often dusted with powdered sugar or glazed.

It's possible that "punchki" is a regional variation of the spelling, but it's more likely that it's simply a misspelling.