Giant made with six-year-old bubble juice
The past couple of years, I have not been very active in soap bubble research and haven't had many opportunities to make giant bubbles. The other day, an early Father's Day celebration, we headed over the hills to Half Moon Bay for lunch and beach lounging. It was good bubble conditions: overcast, mild breeze, temperatures in the mid-60s.
Rather than brew any new bubble juice, I decided to use up old juice that I found in my closet. All the juice had a Dawn Pro base. Two jugs were BLM juice (one 16:1, the other 25:1) mixed up in June 2017. One was mixed up in August 2018 from a dawn pro/guar concentrate mixed in 2014!
Each juice was a little cloudy, but all worked perfectly as if freshly mixed. The juice in these jugs had never been used -- which is critical for remaining shelf stable for so long.