I have a grape vine with a lot of fresh leaves so I thought I'd make stuffed vine leaves. I'm going to precook the filling, so the final cook only needs to be enough to cook the leaves. Most recipes for stuffed vine leaves cook for long enough to cook the filling as well, so I can't get an idea of how long the leaves need. Other recipes are based on oven cooking them until crispy. I'm planning to simmer them in a covered pan or steam them over some new potatoes, as I can do that outside to avoid heating the house (we're having a heatwave here). I expect to par-cook/blanch the leaves first as apparently that makes them easier to roll.
So how long do vine leaves themselves take to steam/simmer?