To make a good sauce for food is an easy way to increase the fat content when eating low carb keto diet. Sometimes you might even have time to do a good hollandaise or béarnaise sauce itself.
If you buy ready-made sauces in the store be sure to check the table of contents so that there are not too many carbohydrates in the sauce. Many ready-made sauces contain added sugars and glutamate (E621). Avoid these.
It is easy to do simple good carb-friendly sauces for food. Remember to always choose full-fat dairy products, and to think about how much carbohydrates that are in the other things you mix into the sauce. Is it a small amount, eg a teaspoon of something high in carbohydrate content, so it usually is not so much carbs in the sauce. But always think about how much it will be total.
Here are some suggestions for both hot and cold sauces that are quick to do:
Take the frying pan that you fried the meat or fish in and add some whipped cream or creme fraiche. You can also flavor with a little veal stock for more flavor in the sauce.
Lemon Sauce: Grate the zest of one lemon and mix with creme fraiche or sour cream in a saucepan (2-3 dl). Crumble a dice vegetable broth (preferably organic) and bring to boil. Season with lemon juice, salt and pepper.
Gorgonzola: Add cream or creme fraiche, and crumble the gorgonzola. Let melt over low heat (do not boil)
Arugula Pesto: Mix arugula leaves, parmesan cheese, a couple of cloves of garlic and olive oil to desired consistency
Cold herb sauce: Mix creme fraiche, sour cream or yogurt Russian with parsley, dill or other herbs. Season with salt and pepper