If you have separate countable and/or uncountable nouns they take a singular verb if they are intended as a combination or are considered together as some kind of unit, be it food, things, actions, etc. Of course they take the usual plural when they are separate things. The nature of the nouns (countable or uncountable) really doesn't come into play.
Canned peas and carrots is the product which has been properly prepared from clean, sound, succulent garden peas and clean, sound
carrots. The peas and carrots are packed in a suitable packing
medium with or without the addition of salt, sugar, or other
ingredient(s) permissible under the Federal Food, Drug, and Cosmetic
act;... Federal Register, Vol. 35 p. 2788
Peas and carrots is (singular) one canned product, but to make the product, the ingredients (peas and carrots) are (plural) first packed in a medium.
The lox, eggs, and onions is good if you tell them to make sure
the onions are well-cooked. Transcript from The Reliable Source,
Aug. 23, 2002
[uncountable + countable + countable]
... to contradict Marcella Hazan, who states firmly in her equally
estimable Classic Italian Cook Book, "Rice and peas is not a
risotto with peas. It is a soup." John Thorne; Simple Cooking
Rice and beans is a classic combination. Each Latino group has a
favorite bean for it and some even have distinctive whimsical names.
Zilkia Janer; Latino Food Culture
Fox and hounds is a race. We start off at opposite corners of the house. David Mitchell; Slade House
Father – who believed that bricks and mortar was a solid base for
financial security – had already invested in holiday flats in Spain at
Bela Medina and Marbella when an opportunity was offered for ...
Graham Wren; A Rugy and a Rose Came to Derby
Catch and release works to maintain healthy populations of fish and there must be enough fish in any given area to maintain or grow
the population. "Catch and Release vs. Catch and Keep Fishing"