"When they're being sorted in the sorting machines, [the straws] just fall through the cracks and so they don't actually get composted — even if they are supposedly made of compostable material," she says.

That's why San Francisco's plastic straw ban goes a step further than similar prohibitions passed by other U.S. cities: Not even plastic that's compostable is allowed.

Yu says he was lucky. His shop was able to beat the rush and order paper straws in advance of the ban.

Other boba shops haven't been so fortunate. Only a few companies manufacture super-sized paper straws big enough for bubble tea. They're all reporting huge orders and delays lasting up to four months.

But paper is not a perfect fix, says Yu. "Part of the experience of drinking boba is poking a sharp end of a straw through the plastic seal of a cup. And that's something we wanted to emulate," he says.

But the paper straws Yu ordered aren't cut with a point on the end. So he and his staff have to cut them all by hand. The paper straws are also expensive — about 10 times more than plastic straws.

What about drinking bubble tea without a straw? "It'd be really hard," says boba fan Julie Abad, a customer at Yu's shop drinking a plain black tea with tapioca and lychee jelly at the bottom. "I think I'd have to pour it into a cup and use a spoon or something."

Others, like customer Kehlani Penland, just dismissed the idea outright. "Nobody wants to do that when you're walking and it's cold outside. You know, you just want to sip it with a straw!"

Right now, Steep Creamery and Tea is offering the paper straws for free. But Yu says that over time, he will have to raise prices.

Still, some environmentally conscious boba consumers, like 10-year-old Alice Asoyan, say all this effort is worth it. "Our world is in big danger right now because of plastic, so paper is probably better," she says.

If the bill passes again on Tuesday, it goes to Mayor London Breed for her signature. She has previously come out in favor of the ban. Businesses will then have until July 2019 to trade in their plastic straws for paper.

Boba lovers can also choose to do what Supervisor Tang suggests: Carry a metal straw just for bubble tea.