Group field in group field

good afternoon, I'm trying to make the site a pizza and was faced with the problem

All the products I grouped in three characteristics - quantitative, mass, price
In the template already check what type of and put the prefix if the pizza is a quantitative characteristic becomes the cm of diameter, if the burgers-in pieces, if the liquid - liters

It's all decided a group field with three text fields

But when I reached the desserts, I realized how deeply wrong!
For example ice cream - it has weight, amount ==1, and the price
But it is present in three variants of filling - vanilla, chocolate and strawberry. and the toppings - also vanilla, chocolate and strawberry - it doesn't affect the price

But I realized that it can't group!
I similarly have to make a group field "topping" and put in the two text boxes under name and price
Then to create the group field "filler" - and also to make it a field of options and prices.
But the problem is that for ice cream - it's called the topping or filling and the noodles on another, and besides the noodles, you can choose several toppings.

I would think that if you can make a cascade of the fields of the cascades. I have one field group group(many values) and a text box with the name of the group(one value)
Whether it is possible to put a group box within a group box?