Online retail giant Amazon’s grocery sales increased 40 percent year-over-year through the second quarter of 2018, according to a new report.

Seattle-based Amazon notched $650 million in grocery sales in the quarter, according to an estimate by market research firm One Click Retail. Amazon purchased brick-and-mortar grocer Whole Foods Market in 2017.

Beverages are the dominant grocery category for Amazon, but almost all categories saw growth in the quarter, One Click Retail says. Coffee sales grew at a 40 percent clip in the quarter, and cold beverage sales rose by 36 percent.

Other categories saw bigger percentage gains, though their overall sales were lower. Snack food sales increased by 45 percent and baking products by 41 percent. Other categories with strong showings in the quarter include candy and gum (up 38 percent), breakfast foods (36 percent) and meal essentials (36 percent).