Just realized that my 28 oz. of oils (combo of coconut, GV shortening, Palm, olive and castor) used to exactly fill a Pringles can will perfectly fill a 1 qt. mason jar. Thinking I will pre-measure several jars for future batches and have them waiting in my soap cupboard. That way, next time I feel like whipping up a batch, all I have to do is measure the lye and water and I'm off to the races. Combining the various oils is a huge part of the mess and cleanup. You could even premeasure for 2lb batches, and that should fit a mason jar as well. That way it would take 2 jars for a 4 lb loaf mold.