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About Us

We focus on the problem of excessive resource consumption and argue that the Net-Zero target can only be achieved with the balanced use of resources and circular economy models.

sustainable acoustic biomaterials from upcycled grass
circular materials upcycled from agricultural waste
cladding materials from upcycled organic waste

Overproduction, excessive consumption of natural raw materials, and deforestation are three of the most significant factors causing climate change. The construction sector is one of the leading sectors that cause these problems. It is responsible for approximately 23% of air pollution, 40% of drinking water pollution, and 50% of landfill waste. However, the main damage caused by the construction sector is the number of raw materials consumed.

Ottan focuses on the high-end materials market in a mega-sector such as construction, which is responsible for half of all natural resource extraction globally. Ottan's founder Ayşe Yılmaz realized the gap in this market and offered a revolutionary solution to food waste, which can be an essential resource with 1.3 billion tons per year. In addition to finding a solution to this waste, which corresponds to 26% of the total global greenhouse gas emissions, Ottan produces the future materials with a solution proposal that will reduce the dependence on conventional natural raw materials.


In other words, we offer sustainable solutions by utilizing green waste, a locally-sourced resource widely available across the globe. With a core model that can be adapted to any feedstock, we have developed various processes to manufacture materials that replace surfaces made from wood, stone, ceramic, and glass using different types of waste as raw materials.

We develop various processes to create wood alternatives and cladding materials with acoustic properties from hazelnut shells, frosted glass alternatives from expired rice, and tile alternatives from eggshells, for instance. By utilizing regional waste materials in local industries, we provide eco-friendly product and production solutions to companies without compromising natural resources.





Ayşe Yılmaz is a true visionary, whose ingenuity and creativity have led her to revolutionize the concept of sustainable building materials. Her journey with Ottan Materials began in 2016 when she first dreamt up and prototyped this innovative solution for utilizing green waste as a stunning building material. Since then, Ayşe's unwavering commitment to sustainability and environmental responsibility has earned her recognition from esteemed organizations such as EIT, Circular Valley, and Masschallenge.

Ayşe's love for materials and nature, along with her eye for function and beauty, led her to Istanbul Technical University. Now, she aims to make even greater impact with Ottan, which promises to inspire and transform the way we experience the world. Her mission extends far beyond merely selling products – Ayşe is determined to build a mindful business that impacts both the environment and society on a larger scale. Her vision and tireless efforts makes her a true inspiration to all those striving to make a positive difference in the world, and her passion and dedication will surely continue to shape the brand new world of sustainable materials.

Feriha Saadet Erden Yaşa


Feriha Saadet Erden Yasa is a highly skilled food engineer and an ardent entrepreneur who brings an unparalleled level of dynamism and innovation to the Ottan team. Her extensive experience in operations, management, and sales development spanning over a decade has made her an indispensable driving force behind Ottan's mission to revolutionize the world with sustainable materials made from organic waste.

With a strong passion for nature and a deep love for food, Saadet is committed to reducing resource consumption and combatting food waste through Ottan's cutting-edge technology. Her sharp analytical skills and unwavering entrepreneurial spirit enable her to constantly seek new opportunities to stay ahead of the curve in this rapidly evolving industry. Saadet's active personality, relentless pursuit of development and innovation, and resolute dedication to a more sustainable future make her an invaluable asset to Ottan.

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