Notes: Look for Chinese rice wine and hoisin or char sui sauce in a well-stocked supermarket or Asian market. sin or char sui sauce in a well-stocked supermarket or Asian market. If marinating the ribs up to 1 day ahead, cover and chill.
1. Rinse beef ribs and pat dry. In a 1-gallon heavy plastic food bag or a deep bowl, mix teriyaki sauce, rice wine, hoisin sauce, barbecue sauce, pineapple, and hot chili flakes. Add ribs; seal bag and turn to coat meat well, or turn ribs in bowl to coat and cover airtight. Chill at least 1 hour or up to 24 hours.
2. If using a charcoal grill, mound and ignite 70 charcoal briquets on the firegrate, with vents open. When coals are dotted with ash, in about 15 minutes, push equal portions to opposite sides of grate. Add 5 briquets to each mound of coals.
If using a gas grill, turn heat to high, cover, and heat for 10 minutes. Adjust gas burners for indirect heat (on each side of grill--none down center); keep heat on high.
3. Set barbecue grill in place. Lay meat on grill, not directly over heat (to avoid flare-ups). Cover barbecue; open vents for charcoal. Cook, basting ribs occasionally with marinade the first 20 minutes and turning as needed for even browning, until meat is rare (red in center of thickest part; cut to test), 20 to 25 minutes total, or medium (pink in center of thickest part; cut to test), 30 to 35 minutes total. If meat is not as brown as you like, move over direct heat and turn frequently. Transfer ribs to a platter or plates.