Comment: Re:I just flip the bottle upside down (Score 2) 287
Oddly, those red bottles prevent that. (I manage a restaurant) Now we just wait for them to empty and then get a new one. Since we don't have to worry about the crappy look of an empty ketchup bottle, we no longer even consider combining bottles. Besides, the health inspector would shit a brick if he ever caught you doing it. At most restaurants that have ketchup on the table, the stuff moves so fast, there's no worrying about spoiled ketchup anyway. I have 30 tables, and I use 60 bottles of ketchup per week, and we specialize in breakfast, not burgers and fries, just to give some perspective.