Father's Office Chef Opens Hybrid Burger-and-Snack Concept

Chef Sang Yoon, known for building Father's Office into a celebrated gastropub chain, opened Tiny's Burger on Monday inside Costa Mesa's South Coast Plaza. The new concept merges a casual American burger stand with a curated grab-and-go konbini shop—a retail model popular in Japan and increasingly adopted by U.S. operators seeking multiple revenue streams.

Located on Level 1 near Carousel Court, the space features a playful outdoor-inspired dining area designed to feel airy and open despite being indoors. The concept is named after Yoon's late Cavalier King Charles Spaniel.

Menu Balances Americana with Asian Accents

The menu, developed with Chef Nanor Harboyan (Helm's, Destroyer), deliberately crosses cultural boundaries. Signature items include a 4-ounce dry-aged beef burger topped with gochujang and ssamjang sauce, a Tokyo Dog dressed in bonito flakes and furikake, and miso mac 'n' cheese blending American and Japanese ingredients.

Yoon told the F&B Magazine Network, "Tiny's is about craveable comfort food refined with ingredients I love. We wanted to create a space that feels nostalgic but entirely fresh mixed with a menu that seems familiar yet new. Tiny's is a place you can visit over and over and again and still discover something new."

The menu also carries forward signature Father's Office items like salt & vinegar tots, while the konbini section stocks house-made sandos, salads, and international snacks and beverages.

Hours and Location

Tiny's Burger operates Monday–Thursday, 11 a.m.–8 p.m.; Friday–Saturday, 11 a.m.–9 p.m.; and Sunday, 11 a.m.–7 p.m. at 3333 Bristol Street, Suite 1000, Costa Mesa, CA 92626.

Why It Matters

The hybrid burger-and-retail model reflects a broader industry shift toward mixed-use fast-casual concepts that serve dine-in, to-go, and grab-and-go customers simultaneously. For operators in premium mall and lifestyle center locations, Yoon's approach demonstrates how elevated ingredients and chef credibility can justify higher price points while the konbini element captures impulse purchases and after-hours traffic.

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Written by FBM Publications Editors