Apparently frozen food in any quantity is allowed by the TSA.
Q. Can I take food that is frozen?
A. In a frozen state, food is considered a solid and not subject to restrictions of liquids, gels, and aerosols. Frozen food will be examined for tampering and additional screening may be necessary. However, liquid-based foods that are frozen (such as gravy) but are partially melted are subject to TSA’s restrictions for liquids, gels, and aerosols. For more information, please read our Liquids Rules: 3-1-1 for Carry-Ons. Please be aware that a Transportation Security Officer has discretion to prohibit a passenger from carrying an item through the screening checkpoint or onboard an aircraft if the item poses a security threat.
Or I could have put the jelly inside a pie (http://www.tsa.gov/travelers/airtravel/holiday.shtm):
Note: You can bring pies and cakes through the security checkpoint, but please be advised that they are subject to additional screening.
I guess I should have read that before traveling through TVC today. Oh, and KY Jelly is also allowed. Just don’t plan on going through security with your Welch’s Jelly (http://www.tsa.gov/assets/pdf/special_needs_memo.pdf).
We are continuing to permit prescription liquid medications and other liquids needed by
persons with disabilities and medical conditions. This includes:
all prescription and over-the-counter medications (liquid, gel, and aerosol), including
KY jelly, eye drops, and saline solution for medicinal purposes;