Where did the earliest version of ketchup originally come from before it became the tomato‑based sauce we know today?, What main ingredients were used in ancient ketchup, long before tomatoes were added into the recipe?, Why did people once doubt whether tomatoes were safe to eat?, What key changes turned old‑style ketchup into the sweet tomato condiment popular all over the world now?, What is the difference between ketchup and tomato sauce according to this video?

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