Preheat the oven to 350 degrees F.
04Place almost full ramekins in shallow baking pan and then fill the pan with boiling water. The hot water bath will allow the flan cups to cook evenly in the oven. Right before placing pan in oven, top each ramekin with a tablespoon of hot espresso. Bake for 40 minutes.05When removing pan from oven, allow the ramekins to remain cooling in their original water bath, overnight if necessary.06Before serving, place ramekins in another shallow pan of warm water to loosen the custard. Run a thin knife around the inside edge of cup to further loosen, place a plate on top of ramekin and flip onto plate to serve.07In preheated saucepan over medium heat, pour in water and bring to boil. Add sugar and stir until caramel brown (about 4 minutes). Remove from heat and allow to cool for about 2 to 3 minutes.