I bought a marinated flank steak that I’ll be grilling on a gas grill. When I purchased it, the butcher suggested I use aluminum foil while grilling it to avoid the marinade potentially causing huge flames as it drips.
When I researched this later, I found articles saying it’s dangerous to use foil while grilling.
Do I actually need to worry about fire or giant flames when grilling a marinated steak? If so, what can I use instead of foil?