I have never seen a better product for cleaning old fat. And you don't need to rub anything, the fat goes away by itself. After this miracle remedy, the dishes look like new.
The composition of the product:
3 tbsp grated laundry soap
3 tbsp soda ash
Anti-Fat gel (any, you can be the cheapest)
4-7 liters of very hot water (you can from the tap)