As a traveler, if you're wondering, is jam a liquid tsa , so according to TSA regulations, it's important to understand the guidelines. The Transportation Security Administration (TSA) restricts the amount of liquids and gels that can be carried in your carry-on baggage. Generally, liquids and gels must be in containers of 3.4 ounces (100 milliliters) or less and placed in a clear, quart-sized, zip-top bag. In the case of jam, its classification as a liquid or gel depends on its consistency and packaging.