The german article [1] that lead me to this claims it is made from two components: some naturally occuring resin and a viscous extract from cashew shells. Both

The german article [1] that lead me to this claims it is made from two components: some naturally occuring resin and a viscous extract from cashew shells. Both obviously not super common but (their claim) possibly up to 5℅ of the global bitumen market. [1] https://www.wiwo.de/unternehmen/industrie/erdoelfreier-asphalt-dieses-neue-material-koennte-den-strassenbau-weltweit-veraendern/29270500.html https://www.wiwo.de/unternehmen/industrie/erdoelfreier-aspha...