-*If the hummus seems too thick, you may use some of the juice from the roasted red peppers to thin the mixture, or blend in a little olive oil. I use about 2 tablespoons per single recipe.-*Tahini is found in most grocery stores. Sometimes by the peanut butter, sometimes by the beans or ethnic foods. I don't like to buy it because it's so simple to make, and a jar us usually about $7-8. Tahini is simply ground sesame seeds made into a paste. Here's my recipe:Blend some seeds in a food processor or grinder or blender (about 1/3 cup) pulse several times until finely ground, add a little olive oil to make a paste. I like to toast the seeds first in the oven or stove top for a few minutes. I buy sesame seeds in bulk at the grocery or in the Asian section of the grocery, where they are less expensive compared to seeds purchased in the spice section.-The hummus can be made up to 3 days ahead and refrigerated. Best served at room temperature.-This recipe is easily doubled.