Per Science Alert, cooking 100 grams of pasta in a liter of water uses one megajoule of energy, which costs about 9 and 15 cents when using an electric and gas stove, respectively.

To solve the issue, Italian physicist and Nobel laureate Giorgio Parisi shared an energy-saving hack (conceived by Italian architect Alessandro Busiri Vici) on Facebook in 2022.

Parisi suggests adding pasta to boiling water, waiting two minutes, killing the heat, and placing a lid on the pot. Then, cook the pasta a minute longer than the package suggests.

Instead of using the stove throughout, you only use it to boil the water and let steam trapped by the lid finish the job. Per Parisi, it saves eight minutes of energy consumption.