2 Tbs. whole Chinese five spice
4 lb. bone-in beef short ribs
2 to 3 Tbs. olive oil
1 large yellow onion, cut into 1⁄4-inch slices
4 garlic cloves, thinly sliced
1⁄3 cup plum wine
1⁄3 cup soy sauce
1⁄3 cup rice vinegar
1⁄4 cup sesame oil
1 Tbs. chili garlic paste
2 Tbs. grated fresh ginger
Zest of 1 orange, peeled with vegetable peeler   into 1⁄2-inch strips, plus juice of 1 orange
1⁄4 cup sugar dissolved in 3⁄4 cup boiling water
Steamed rice for serving