High temperatures in Mexico and California, coupled with the effects of El Niño, have sent avocado prices to levels unseen in the United States since the import ban on the Mexican fruit was lifted in 1997.
Eight out of 10 avocados sold in the United States come from Mexico.
The avocado price rise was felt particularly just before the July 4 holiday.
Consumers and smaller restaurants with weaker buying power are feeling the pinch the worst, because of markups and delivery charges.
"We're not offering [sides of] guacamole," said Ben Miller, who owns the restaurant South Philly Barbacoa with his wife, Cristina Martinez. "We're doing more salsas." The few avocados they now buy are used for guacamole spread on tortas.