Does anyone make their own hummus? I just tried making some and it's not very good. I used chickpeas, tahini, olive oil, garlic, cummin, chilli pepper flakes and some roasted red peppers and it's still pretty bland and it's not creamy like the store bought! It's almost grainy. What's up? I added enought liquid because it's already sortof thin so that's not it, How do you make yours just right?