Here is the secret to smooth congee, like those served in your favorite Cantonese congee houses:
1. wash rice and drain
2. add 1 tsp salt and 1 tsp oil to the rice
3. allow mixture to marinate at least 30 min to overnight
4. rinse mixture again before cooking (unless you love lots of salt & oil)
5. add enough water to rinsed rice, bring to boil, then simmer for anywhere from 1-3 hours according to your time availability. A longer simmer is usually better for congee.
ENJOY!

No need to blend it, add starch or anything. This should result in a plain, smooth and creamy congee.
Ka Mun, PTT Buddhist Temple
Vancouver, BC Canada