Does ketchup require refrigeration?

Online Answer
Because of its natural acidity, Heinz® Ketchup is shelf-stable. However, its stability after opening can be affected by storage conditions. We recommend that this product, like any processed food, be refrigerated after opening. Refrigeration will maintain the best product quality after opening.
Related Questions 📌
They're just two different terms for the same thing. Ketchup has been around a long time. The name probably comes from ke-chiap (sometimes written ke-tsiap), which was a pickled fish sauce popular in China. European traders loved the sauce and brought it west with them in the 17th century..
Because of its natural acidity, Heinz® Ketchup is shelf-stable. However, its stability after opening can be affected by storage conditions. We recommend that this product, like any processed food, be refrigerated after opening. Refrigeration will maintain the best product quality after opening.
Why is ranch always extra at restaurants, and why don't they package them into packets like ketchup? Restaurants sometimes charge money for extra sauces and dressings in order to cover their costs. They don't get the stuff for free, its cost isn't built into every menu item and they charge you so they don't lose money..
The main problem with these vegetables are the alkaloids present in them — solanine, capsaicin and nicotine are the main ones. The last alkaloid nicotine found in fries (made from potato) and ketchup (made from tomatoes) raises valid questions, such as why we are so addicted to both of these and the combination.
one monthShelf life: 1 month If you use ketchup often, do as restaurants and diners do — just leave it out. Ketchup can be kept unrefrigerated for up to one month, but if you don't think you'll finish the bottle in that timeframe, it's best to keep it in the refrigerator.