Sunny's Orange Jalapeño Party Ribs

orange marmalade

chopped white onion

brown sugar, light or dark

ketchup

Worcestershire sauce

jalapeños, one seeded, both finely chopped

garlic, grated on a rasp

Zest of 1 orange (if using fresh orange juice)

Kosher salt and freshly ground coarse black pepper

orange juice (preferably fresh)

to 4 pounds baby back pork ribs, sliver skin removed

Kosher salt and freshly cracked black pepper

orange, sliced into wedges, for serving