Step 1: 1. Firstly, prepare the caramelized sugar so you can let it cool. In a pan over a medium heat, add the sugar and cook until they turn sticky and brown. Then carefully add in the water and butter. Put aside and let it cool.
Step 2: 2. In a mixing pot, add in the flour and bicarbonate soda. Mix all ingredients well. Put aside.
Step 3: 3. In another bowl, mix the condensed milk with the eggs before adding in the flour mixture little by little.
Step 4: 4. Lastly, add in the cool caramalised sugar and stir well. Transfer the mixture into a baking mold and cover the top with a foil to avoid water drops.
Step 5: 5. Steam in a medium heat for about an hour.