Our Story

We’re Seth and Mica Nitschke, family ranchers in Central California. We founded Mariposa Ranch, formerly Open Space Meats, in 2006 after Seth had spent many years in the conventional cattle business. After a time spent on a small grass-fed beef farm in Western Australia, Seth decided to bring the cattle care and harvesting methods to the United States.

At Mariposa Ranch, we work with great respect for the environment and with the cattle in our care. We never use hormones, antibiotics or feed grains to our cattle. We don’t use herbicides, pesticides or commercial fertilizers on our pastures. All of our cattle are 100% Pasture Raised, Pasture Finished, Grass Fed Beef from California!

Open Space Meats Grass Fed Beef:
The Hornitos Ranch


If​ ​you​ ​want​ ​to​ ​see​ ​where​ ​your​ ​beef​ ​comes​ ​from,​ ​view​ ​our photo ​gallery​ ​or​ check out our ​videos​ ​to​ ​watch​ ​the​ ​tours​ ​of​ ​our​ ​ranches.

Ranch Tour


FamilyFood for thought
December 11, 2020

Dear Instagram Rancher: Please Stop.

Recently, I saw a post by some ranchers that are kinda “Internet Famous”, if that’s the correct term, and it kinda stuck with me.  It was about days getting shorter…
August 28, 2020

Back to School is WEIRD Now…

Our kids started school last week IN A FULL-ON distance learning
June 11, 2020

Cactus Junk Burritos

Ingredients 2 lb Grass-Fed Pork or Beef, your choice of cut, cubed or thin sliced2 Tbsp Cajun seasoning2 Tbsp Olive Oil1 cup Onion, chopped3 cloves Garlic, minced1 Jalapeño, remove seeds…