Natural Building – Cob Oven Workshop

JUNE 1-2 2019

 Register here


Join prominent local natural builder Ayal Bryant for this weekend long Cob Oven Workshop.  The course will involve an introduction to Cob Ovens, the theory of cob ovens, the destruction of the old Rocket stove oven, and the construction of the new Cob Oven.  This will be the ideal introduction to working with natural materials and cob ovens are often the perfect starting project for the novice natural builder.  Rancho Mastatal has been using cob ovens and rocket ovens and rocket stoves for the last 15 years.



We will be having a follow up workshop on June 22-23 to introduce other concepts of Natural Building that we use at Rancho Mastatal and then put some finishes on the Cob oven built during this weekend class.



Ayal B profile picture.jpg

Ayal Bryant has over ten years experience in natural building and during the past 5 years has specialized in building cob ovens for restaurants and homes all over Costa Rica.  His passion for natural building comes from his family who have worked on restoring and rebuilding typical Costa Rican adobe homes which meant he spent most of his summers in mud holes helping prepare adobe mix. Once graduated as a product design engineer he pursued a MSc in sustainable building in the UK and returned to Costa Rica to build the largest super adobe house in Central America.

During this time he also started to build cob ovens, his first one was in his mother’s yard but as people began to see how it was built and the end result orders started to come in for customs ovens to be built all over the country. This allowed Ayal to dedicate the past 5 years to build over 20 ovens and has become the only profesional cob oven builder in Costa Rica.

course start and ARRIVAl dates

The course will start on the morning of Saturday, June 1.  Students are encouraged to arrive on Friday May 31.  Lodging the night of May 31 is included in the cost of the class.


course end and departure dates

The course will end at around 5 p.m. on June 2.  Most students will depart on the morning of June 3.  Lodging the night of June 2 is included in the cost of the class.


$200 – Non-Costa Rican Nationals

$150 – Costa Rican Nationals

Price includes all food (except Sunday dinner when we close our kitchen to support the local restaurant), lodging and instruction.  

A $100 non-refundable deposit will secure your spot in the course.  You can make your deposit with PayPal below or go to our Payment page for more information and options.


This class will be taught primarily in English though there will be plenty of bilingual support for those not perfectly comfortable with English.



All food (except Sunday dinner when we close our kitchen to support the local restaurant) and lodging is included in the cost of  the course.   Students will stay in the Ranch bunkhouse with options for upgrades.  We provide high quality mattresses, linens and blankets.  Please see our Accommodations page for more information.


Please see our  Payments page for more information about how to pay.


Please see our Directions page for detailed information on how to get to Rancho Mastatal.


To enroll in the class, please fill out our Online Registration Form.


For more information about this class and Rancho Mastatal please contact us at [email protected] and/or call the Ranch at 2200-0920.