A 65-year-old resident of Havana has discovered an unusual way to help ferment home-made tropical fruit wines, showing off his prophylactic-based method from the Cuban capital, Wednesday.<br />Every day Orestes Estevez along with his wife and son fill bottles containing 20 litres of wine and with a secret mixture that he doesn’t share with anyone. Condoms are then placed over the glass jugs, which are filled with a range of ingredients, including grapes, bananas, ginger and watercress.<br />The condoms inflate, indicating that the fruity mixture is fermenting and producing gases.The winemakers know the produce is ready for bottling once the condom collapses.<br /><br />Video: Ruptly<br />Music: Big Bang Fuzz