green sauce envy

Dear Internet:
Is there anywhere that I can buy Del Taco's green sauce by the bottle?
As it is, I am scraping the change out of the corners of my purse so I can head to DT for lunch. I am considering ordering their world-famous bean & cheese burrito w/green sauce, with just a few minor modifications:

"Um, can I get that bean & cheese burrito without the cheese?"

"And can you hold the beans, too?"

"And while you're at it, just skip the tortilla, ok?"