""You can tell [the gas station is] unhygienic if there's too much grime building up, especially on the rollers of the grill." When you think about it, hot dogs spend hours and hours on these rollers. So, if they're not clean, that's several hours of rolling around in grime and debris until an unsuspecting customer picks one up. Hupfeld notes that the status of the hot dog rollers can be a good indication of the cleanliness of the staff or gas station overall."
"That grimy, sticky-looking buildup on hot dog rollers is an accumulation of oils and fats that come from the meat, although some can also come from the hot dog casings, which are made from natural intestine casings, collagen, or cellulose. The residue is a completely normal occurrence and can happen in even the most professional kitchens - but it's not at all normal to let the buildup get so bad that it turns into a yucky grime."
Generations have encountered gas station hot dogs served from roller grills, and grime accumulation on those rollers signals hygiene problems. Grime on rollers consists of oils and fats from meat and sometimes residues from casings made of natural intestine, collagen, or cellulose. Hot dogs can sit for hours on rollers, increasing exposure to buildup, grime, and debris. Grime-covered rollers can reflect broader cleanliness issues among staff or in the facility. Grime can form even in professional kitchens, but reputable operations clean grills or rollers at least daily, often multiple times per day.
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