[frosted-flakes]

I've only ever seen sugar available in paper sacks, like flour. Except powdered (icing) and brown sugar, which so come in bags, probably because they're a lot more moisture sensitive.

I've always wondered why some products are only available in glass jars, like jam. While some things used to be only in glass jars, but is now commonly plastic bottles (apple sauce, tomato sauce).

Interestingly, in the past couple of years, plastic peanut butter jars seem to have switched to opaque brown plastic, when they used to be clear. Is that because it's difficult to make clear products from recycled plastic?