If you cook with fish onions potatoes and sour cream what type of food might be cooking?

You're likely cooking a dish that falls into the European or Scandinavian culinary traditions. Here's why:

* Fish: A common protein source in these regions.

* Onions: A staple ingredient in many European dishes, providing flavor and aroma.

* Potatoes: Another staple, particularly in Scandinavian and Eastern European cooking.

* Sour cream: Often used as a creamy sauce base or topping in these cuisines.

Possible dishes:

* Swedish Fish Soup (Fisksoppa): A classic soup with fish, potatoes, onions, and often cream or sour cream.

* Danish Fish Stew (Fiskesuppe): Similar to Swedish fish soup, but often with added vegetables like carrots and celery.

* German Kartoffelsalat: A potato salad often made with potatoes, onions, vinegar, and sour cream (though sometimes mayo is used).

* Fish Pie: A baked dish with a creamy fish filling topped with mashed potatoes.

It's important to note that these are just possibilities, and the specific dish could vary greatly depending on the exact combination of ingredients and cooking methods.