Welcome to Mark’s Diner!

Breakfast - Lunch - Catering

Mark’s Diner is a warm and welcoming, family-friendly restaurant in Portage, MI, specializing in your favorite breakfast and lunch dishes. We offer a kid’s menu, daily specials, and lunch specials to satisfy every appetite.

About us

Our Story

Mark Romstadt and his wife Michelle welcome you to Mark’s Diner. At Mark’s Diner, we carry on the family tradition established by the previous owners, offering great breakfast and lunch options at reasonable prices. Mark’s Diner also provides catering for breakfast, lunch, and dinner.

Meet Mark

In 1993, Mark and Michelle moved to Kalamazoo, where Mark continued his career with Burger King, eventually serving as a Restaurant Manager and later as a Human Resources Manager for 15 years.

In 2014, Mark left the fast-food corporate world and briefly tried his hand in the insurance industry. However, his passion for food service brought him back. In May 2015, Mark joined EMA Enterprises under the guidance of Mike Leeuw, where he learned a new side of the food service business: breakfast, lunch, catering, and concessions.

A few years ago, Mike and Mark discussed the possibility of Mark owning his own restaurant. Mike, dedicated to passing successful businesses on to long-term employees, believed in Mark’s vision. Now, in January 2025, Mark’s Diner is a reality. A heartfelt thank you goes to Mike and Jane Leeuw for their confidence and support in passing on this legacy.

Mark began his journey in the restaurant industry at the age of 16 in Northern Michigan. His first job was with a Burger King franchise in Alpena, MI. Over the next 31 years, Mark worked with three Burger King franchisees across Michigan, including Alpena, Oscoda, Sault Ste. Marie, and Big Rapids.

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