"Ron, you can't ruin a marinade - " Hermione rolled her eyes, but started to take things out of the bags and put them away. Even if she was going to use them, she liked them put away properly before she started taking them out again.
"It's like a potion. You just mix the ingredients and then let the meat lie in it for a bit.... " Except, Ron could likely mess that up, and Hermione well knew it.
"We could still do a pasta, too. As a side, with the lamb chop?"