When you think of ketchup, the tomato kind might come to mind, unless you're familiar with the Filipino version of the ...

If aphids are a problem, bury chopped up banana peels around the base of your plants to keep them at bay. You can also use a combination of apple cider vinegar and banana peels as a trap for pests.

The added nutrients from the banana will keep your plants growing strong. You can make banana vinegar from the peels that can then be added to salads and vegetables. See the recipe instructions here.

This is the torpedo-shaped banana shallot, used in this recipe ... Meanwhile, bring the red wine vinegar and sugar to the boil, stirring to dissolve the sugar. Simmer until slightly thickened.