Troubleshooting an epic lotion fail, Lisa asks: I have been making and selling my lovely lotion for 5 years. Due to higher demand I went from a 5 gallon batch to a 25 gallon batch, done in an oil melter. Exact same proportions/percentages. The lotion turned out totally watery! Not thick and creamy. Is this normal? Is there a trick to upsizing lotion recipes? I know food recipes can need some drastic shifts when upsizing...
That's a lot of lotion! I thought I was pushing the boat out with a few kilograms, but 25 gallons! Wow!
No, as far as I know, you don't need to make radical changes when making larger batches. But you might need to use a different mixer. When I made a 4 kilogram (about 8.5 pounds) batch of lotion, I had to move to using a paint mixer on the end of a drill to do the mixing as my hand mixer and stand mixer couldn't handle the capacity. I'm assuming you're already do this, so I'm not sure what else to suggest.
Having said this, I have never made 25 gallons of lotion, so I'll turn to my awesome readers and pose this question: Do you scale your recipes when you are making huge amounts like 25 gallons?