Executive Team

Here at Fischer & Wieser, words like quality, flavor, innovation, and service are spoken and heard from the orchard to our kitchen where we handcraft our sauces, jams, and jellies. We welcome you into our family, invite you to experiment with our tantalizing flavor combinations, and look forward to becoming one of your pantry favorites. 

Case D. Fischer, CEO and President

Case D. Fischer joined the company in 1979 as a student harvesting peaches at the Wieser’s orchard. So taken by the business of making fruit preserves, Case studied Food Technology and Food & Fiber Marketing at Texas A&M University and returned home to become Wieser’s business partner and company visionary.  A skilled relationship builder, Case sees customers as friends and neighbors to be kept for life. His enthusiasm and commitment to time-honored quality paired with his passion for innovation makes Case invaluable to Fischer & Wieser’s success. Case is an integral part of our community serving as Chairman of the Admiral Nimitz Foundation, past President of the Fredericksburg Chamber of Commerce, and past President of the Fredericksburg Shopkeepers Guild.

Mark B. Wieser, Chairman of the Board and Founder

A native of Fredericksburg, Mark started Fischer & Wieser’s Das Peach Haus® as a roadside fruit stand in 1969, selling fruit harvested from his parents’ orchard.  His father planted the original family peach orchard and his mother made the irresistible preserves that became the company’s first product.  Case and Mark formed a partnership and created Fischer and Wieser Specialty Foods, Inc. now the #1 gourmet food purveyor in Texas. A graduate of Texas A&M University and former Judge for Gillespie County, Mark brings a keen knowledge of retail merchandising as active Chairman of the company.

Jenny Wieser, Ph.D., Chief Operating Officer

Jenny re joined the team in November of 1998. She got her start in the business working summers for her Uncle Mark beginning at age 9 and working most Summers until leaving for College. She graduated in 1987 summa cum laude from Texas A&M University with a B.A. degree in Biology and in 1997 received a Ph.D in biology having focused on Microbial development. Jenny served 2 years in the U.S. Peace Corps as a Math and Science teacher.  In addition to helping to direct the operations of the company, Jenny actively serves the community. She is past Chairman of the Chamber of Commerce and currently serves on the Board of the Good Samaritan Center as well as the Hill Country Memorial Hospital Foundation Board. Her business successes and community contributions earned her the Fredericksburg, Texas Chamber of Commerce distinction as the 2011 Business Woman of the Year.

Deanna Fischer, Chief Experience Officer

Deanna joined the company in 1988 upon her marriage to Case - she is the Chief Experience Officer. She oversees Marketing & Branding for the company and Fischer & Wieser’s Culinary Adventure, which consists of Das Peach Haus, The Culinary Adventure Cooking School, The Culinary Adventure Tasting Room, the Peach Orchard and much more – all located on the original farm in Fredericksburg. Her objectives are to provide the “Ultimate Fischer & Wieser Experience” AND to Inspire you Culinary Adventure! Deanna graduated from Texas A&M University with a Bachelor of Arts in Modern Languages. She is on the Board of the Friends of Sterling C. Evans Library at Texas A&M and volunteers for the Admiral Nimitz Foundation which operates the National Museum of the Pacific War in Fredericksburg. She and Case have three children: Dietz, Elle and Simon.


Jonathan Pehl Jay Salamone Martha Major
Jonathan Pehl
Vice President, Sales
Jay Salamone
National Account Director
Martha Major
National Sales Manager
Laura Cowan Patricia Evans Ashley Seelig
Laura Cowan
National Sales Manager
Patricia Evans
Inside Sales
Account Manager
Ashley Seelig
Director of
Quality Assurance
& Product Development
Cody Page Emma Dietert John DeMers
Cody Page
Quality Assurance &
Safety Manager
Emma Dietert
Director of
Culinary Adventure
John DeMers
Culinary Ambassador