I want to share the coffee. I want to share the history," Alhasbani said. Hundreds of Yemeni coffee shops have opened in recent years on city blocks and in strip malls all over the U.S.

Stewart’s coffee empire began in 1969 with The Wet Whisker, a Coupeville ice cream shop that soon branched out to roasting coffee when his brother Jim brought back an ancient 25-pound roaster ...

He covers the specialty coffee industry in his newsletter, The Pourover. Pooler, who is based in Scotland, has followed the rise of Yemeni coffee shops in the U.S. and the U.K.