Vagus, any type of onion will do, even cooking-onions.
The original recipe, which as called "British-style corned beef-hash" called for the bottom layer to be baked-beans. I thought the beans made the taste a little too heavy so changed it to cream-corn and peas. It is very tasty and easy to make.
gness I know! I know! lol.
If I was living with you,I wouldn't be on AB considered with food matters, I would be lacking my lips at the thought of "afters".