Prepare the Ingredients:
Start by prepping the vegetables. Cut a brown onion in half, remove the skin, and dice it into small pieces. If you want to save money, you can save the onion skins and make stock with them. Next, cut three garlic cloves in half and lay them flat for easy thin slicing. Set them aside. Roughly chop fresh thyme and flat-leaf parsley. The size doesn’t matter much, as long as they’re small enough to release their flavors into the sauce.
Cooking the Sauce:
Place a large, heavy pan on high heat. Add one tablespoon of olive oil and two tablespoons of clarified butter. The olive oil helps prevent the butter from burning too quickly, while the clarified butter gives the sauce a rich base. Once the butter has melted, add the diced onions. Stir frequently, cooking them for about three minutes, until they become translucent and lightly golden. After the onions are softened, add the garlic slices and sauté for 45 seconds, stirring often to release the garlic’s aromatic oils. Be careful not to burn the garlic.
Deglazing with White Wine:
After the garlic has sautéed, pour in two tablespoons of white wine. The wine may flame up, so be cautious. Stir it in for about one minute to cook off the alcohol. If you’d rather not use wine, substitute it with veggie or chicken stock.
Add the Cream:
Once the wine has evaporated, pour in 400 milliliters of heavy cream. Add the chopped parsley, thyme, sea salt, and cracked black pepper. Mix everything well, then bring it to a boil. Once boiling, reduce the heat and let the sauce simmer for 8 minutes, stirring often. This will allow the sauce to thicken and the flavors to blend together perfectly.
Final Touches:
After 8 minutes, the sauce should be thick and shiny. Taste and adjust the seasoning, adding more salt or pepper if needed. Let the sauce simmer for an additional two minutes before removing it from the heat.