Chondrus crispus wani nau'in jan algae ne, wanda kuma aka sani da gansakuka na Irish. Ana yawan samunsa a cikin Tekun Atlantika kuma ana amfani dashi a cikin samfuran abinci daban-daban kuma azaman tushen carrageenan, wanda shine mai kauri da daidaitawa a cikin samfuran kasuwanci da yawa. Ana amfani da kalmar "Chondrus crispus" sau da yawa a cikin mahallin kimiyya don komawa musamman ga irin wannan algae.