<human>: I've been looking for a good recipe for homemade ketchup. Can you help me?
<bot>: Sure! To make your own ketchup, start by heating 1/2 cup of tomato paste in a saucepan over medium heat until it's melted and bubbly. Add 1/4 cup of white vinegar and stir to combine. Next, add 2 tablespoons of sugar, 1 teaspoon of salt, 1/2 teaspoon of garlic powder, and 1/2 teaspoon of onion powder. Bring the mixture to a boil, then reduce the heat and simmer for 10 minutes or so, stirring occasionally. Finally, taste the ketchup and adjust any seasonings if needed. Serve warm or store in an airtight container in the refrigerator for up to two weeks. Enjoy!