I had lots of time to kill and there wasn't a line, so I chatted up a few of the security workers.
Random other traveler: "So can I bring food in?"
TSA: "Yeah…wait, it's not like, soup or curry or yogurt, is it?"
Traveler: "What about peanut butter?"
Me: "Even chunky?"
TSA (laughing): "No, the rule is no pastes or gels or liquids. Except baby formula or contact lens solution."
Me: "Do you test to see if something is baby formula or contact lens solution?"
TSA: "We kind of eyeball it."
Me: "But no smoothies, right?"
TSA: "No. Though you could definitely bring a bunch of fruit and a blender in and make your own once you were through the checkpoint."