Fraldinha long cook in PVC bag on the grill

Slow-cooking skirt steak in a PVC bag (cook-bag) on the charcoal grill, with butter and herbs.

What I did

• Fraldinha in PVC bag with butter and herbs
• 4 hours on the grill
• Just over midway up (about brick-level 3 of however many)

Result

Nice, falling apart. Quite small after that much time — significant shrinkage. Herb flavour faded by the end.

Next time

• Try higher up on the grill (further from coals) — gentler heat to retain more size.
• Refresh the herbs about 2/3 of the way through (around 2h 40 in a 4h cook). The initial herbs are spent by then; a second handful keeps the flavour live.
• Consider buying a slightly bigger piece to account for shrinkage.