"Bluewater is the only water I serve behind our omakase counter,” says champion barista Mehmet E Sogan
News —
Bluewater USA welcomes champion coffee taster Mehmet E. Sogan as Brand Ambassador.
San Marcos, California, September 25, 2026 -- Bluewater USA Inc. has named Mehmet E. Sogan, founder of Memli Coffee Lab in San Marcos, California, as its Brand Ambassador. Mehmet brings his sensory expertise to help explore how water affects coffee.
Memli is a boutique specialty coffee roaster, tasting room, and education studio focused on carefully sourced coffees, gentle roasting, and slow-bar preparation. Since 2017, over 4,000 guests have joined its seminars and training sessions.
Mehmet won the United States Cup Tasters Championship in 2024, 2025, and 2026. He also finished third at the 2026 World Cup Tasters Championship and was a finalist at the 2026 Open de Cata.
“What makes this partnership so exciting is that Memli is not a typical café,” said Niklas Ivarsson. “Mehmet's focus on slow bar, sensory work, education, and careful water preparation lets us think about water in new ways.”
Together, Bluewater and Mehmet will evaluate SuperiorOsmosis™, Bluewater’s purification platform for a clean, reliable, and consistent water foundation, alongside LiquidRock® and CoffeeRock® remineralization solutions. The work will explore controlled mineral balance and its role in extraction, flavor, and equipment protection.
“With Bluewater CoffeeRock® and LiquidRock®, I finally found water precise enough to step back and let the coffee speak for itself. That level of trust is why Bluewater is the only water I serve behind our omakase counter,” said Mehmet.
Ivarsson add: "The partnership connects Bluewater’s water technologies with Mehmet’s precise approach to flavor, providing the clean, precise water canvas that lets the coffee speak for itself while creating ways to deepen understanding through tasting, brewing, and hands-on education."
