Parboil potatoes about an hour before you need them, and immerse them in cold water.
Replace the water every so often so it stays cold.
Start the beef browning.
Season to taste with salt, pepper, and garlic when done.
Slice the bacon and fry it over medium heat with plenty of butter.
When it is slightly crisp, add the sliced onions and cook them gently until they are soft and sweet.
You may have to use two pans when you add the potatoes to the bacon and onion mixture. Just warm up another pan with butter, halve the bacon and onions and add them to the new pan, and divvy up the potatoes equally between the two pans.
Hamburger Tartaflette https://traditionalcookingschool.com/food-preparation/recipes/hamburger-tartaflette/?utm_campaign=autoblog&utm_source=blog&utm_medium=bloglink&utm_content=Hamburger+Tartaflette