1 can condensed milk, label removed. Place in pressure cooker, fill with cold water covering the can with one inch of water, lock the lid and start cooking. Cook for 30-40 minutes (depending how dark you like it) under high pressure then remove from heat and release pressure (a balcony is best for this). Once the lid unlocks, remove the hot can and wait until it is room temperature before opening. Store in a Tupperware in the fridge for up to 3 days. It’s so freaking good, I like it on the second day when it’s completely chilled!