But in South Africa, that's posed a problem.

They don't have enough of the citrus fruit.

That's prompted brewer AB Inbev's South African Breweries to act.

Its investing 19 million rand, or just under $1 million, in a local lime farming project in South Africa's northern Limpopo province.

"It's quickly become the biggest lime farm in South Africa."

Piet Smit is CEO of Komati which runs the 150-acre farm.

"I think the relationship with AB InBev was the biggest driver, not only because they funded the project but also they're the major takers of the fruit. They have the first right to take this fruit and use it in their Corona beer."

Smit said that in the last financial year they'd budgeted to produce 300 metric tons of lime.

Instead they're going to end up with 700 metric tons.

South African Breweries' Corporate Affairs Vice President Zoleka Lisa said the challenge for them had been that 10% of citrus farm land in South Africa was dedicated to limes.

And that had forced the company to import.

"Imported limes means you never know when they'll be available, limited availability and secondly it also drives costs."

SAB partnered in 2020 with the Moletele community which provided the land.

Lisa said the lime project was an opportunity to invest in the community, while preserving the ritual of a wedge of lime in your bottle of beer.