Don't laugh!
Years ago when I was a young married, I used to rave about my sister's marinated mushrooms to my young wife. One evening when I got home from work, she had a surprise for me. She had found a recipe for marinated mushrooms in a magazine and made them for me. She went on to tell me about having to clean, blanch and peel the mushrooms and mix the ingredients for the marinade, slicing garlic and other ingredients. It took her all day. It was a labor of love. They were good but nothing like my sister's. I said I loved them but she was not happy and called my sister to ask how she made hers. (Why she didn't do this to start is beyond me.)
My sister's recipe: A couple of cans of mushrooms, a bottle of Italian dressing and some garlic. Takes 5 minutes and tastes great! We had a good laugh over that one.
The secret was the brand of salad dressing she used.