Note! A good beetroot is a flat one. The best mayonnaise for this is French or Russian. The garlic can be substituted with a few drops of garlic oil.
What is garlic oil? Something very practical worth making. Whenever I have some free time, I clean a few garlic cloves, put them in a jar, pour oil over them and put them away in the refrigerator. This way, I always have clean garlic and oil on hand. I use the oil the garlic has soaked in as a spicy condiment.
Boil the beetroot in a pressure cooker for 1 hour on low heat. After cooling, clean it of its rind and grate it finely on a grater. Add a few drops of garlic oil or 1 clove of crushed garlic. Add salt to taste, a little black pepper and the mayonnaise.
The taste is quite a bit strange, but very enjoyable. Not to mention how healthy it is.