It is hard to get a silky steamed eggs but the tip is to beat the eggs slowly. Just gentle stir in circular movement and then add in about 100ml water into the beaten 2 eggs. Add salt to taste (about 1tsp). Sieve finely into a bowl before steam under high heat for 15 minutes.
In a pan, fry some chopped garlics in 2 tbsp oil. Once browned, pour the garlic and oil on top of the steamed egg. You can subs with fried shallots instead.
I am satisfy with the smooth custard but hope to improve further. Will keep practising till I get the consistency and texture that I like.