Onion Caramel


  • 6 brown onions, peeled and halved
  • 100 g ( oz) cane sugar


Put the onions and sugar in a vacuum bag and add 150 ml (5 fl oz) water. Seal and cook in a 78°C (172°F) water bath for 5 hours. Strain the liquid into a saucepan over medium heat and cook slowly until reduced by half.