I had no idea there was such a thing. Perhaps they don't sell them here, or since I'm a low-carb eater I never spotted them in the snack aisle.
The picture looked like fried pork rinds (chicharrónes) which I do eat because they have zero carbs.
The only quavers I knew up 'till now were what the British people call eighth notes.
Then of course there are semiquavers and I think semidemiquavers or something like that.
We learned this for a bartender at a club we were playing in many, many, many years ago
He would request it by holding up his hand and then opening 3 fingers, one at a time.
1 2 3 - Len Barry
Beyond The Sea - Bobby Darin
We learned this for a regular customer decades ago. Making the backing track was a challenge, and I still enjoy singing it.