Materials required: A piece of aluminum foil and an oven.

Instructions: Wrap your avocado in aluminum foil and place it on a baking sheet. Bake it in an oven preheated to 100°C for about 10 minutes (depending on how hard the avocado is).

Remove the avocado from the oven, let it cool, and then unwrap it. If all goes well, it will be perfectly ripe, firm, and slightly creamy. The quick scientific explanation: The aluminum foil helps trap the ethylene gas produced by the avocado, which is responsible for ripening.

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