I guess you mean breakfast?
The bag used earlier is low in cost with plastic bags, but this kind of bag is generally thinner and smaller, so it can be reused and has a greater impact on the environment;
In addition, some bags, with recycled materials, are not hygienic.
If paper bags are used, the cost will be high. Although they cannot be reused, they are easy to rot and have little impact on the environment.
In addition, this kind of paper bag is usually machined and has an inner coating for waterproofing. This kind of coating is food grade and clean.