A method for producing a multimer of hydroxylated fatty acid, wherein the multimer is a dimer to decamer and the hydroxylated fatty acid is 10-hydroxy-cis-12-octadecenoic acid, 10-hydroxy-cis-12,cis-15-octadecadienoic acid, 10-hydroxy-cis-6,cis-12-octadecadienoic acid, 10-hydroxy-cis-6,cis-12,cis-15-octadecatrienoic acid, 10-hydroxy-cis-15-octadecenoic acid, 10-hydroxy-cis-6-octadecenoic acid, 10-hydroxy-cis-6,cis-15-octadecadienoic acid, 10-hydroxy-trans-11-octadecenoic acid, 10-hydroxy-trans-11,cis-15-octadecadienoic acid, 10-hydroxy-cis-6,trans-11-octadecadienoic acid, 10-hydroxy-cis-6,trans-11,cis-15-octadecatrienoic acid, 13-hydroxy-cis-9-octadecenoic acid, 13-hydroxy-cis-9,cis-15-octadecadienoic acid, 13-hydroxy-cis-6,cis-9-octadecadienoic acid, 13-hydroxy-cis-6,cis-9,cis-15-octadecatrienoic acid, 13-hydroxy-cis-5,cis-9-octadecadienoic acid, 13-hydroxy-trans-5,cis-9-octadecadienoic acid, 12-hydroxy-cis-14-eicosenoic acid, 12-hydroxy-cis-14,cis-17-eicosadienoic acid, 12-hydroxy-cis-8,cis-14-eicosadienoic acid, 12-hydroxy-cis-5,cis-8-eicosadienoic acid, 12-hydroxy-cis-8,cis-14,cis-17-eicosatrienoic acid, 12-hydroxy-cis-5,cis-8,cis-14-eicosatrienoic acid, 15-hydroxy-cis-11-eicosenoic acid, 15-hydroxy-cis-11,cis-17-eicosadienoic acid, 15-hydroxy-cis-8,cis-11-eicosadienoic acid, 15-hydroxy-cis-8,cis-11,cis-17-eicosatrienoic acid, 15-hydroxy-cis-5,cis-8,cis-11-eicosatrienoic acid, 15-hydroxy-cis-5,cis-11-eicosadienoic acid, 15-hydroxy-cis-5,cis-11,cis-17-eicosatrienoic acid, 10-hydroxytetradecanoic acid, 10-hydroxyhexadecanoic acid, or 14-hydroxy-cis-4,cis-7,cis-10,cis-16,cis-19-docosapentaenoic acid, the method comprising multimerizing the hydroxylated fatty acid by using a lipase from Candida cylindracea or Candida rugosa to produce the dimer to decamer. 10-hydroxy-cis-12-octadecenoic acid, 10-hydroxy-cis-12,cis-15-octadecadienoic acid, 10-hydroxy-cis-6,cis-12-octadecadienoic acid, 10-hydroxy-cis-6,cis-12,cis-15-octadecatrienoic acid, 10-hydroxy-cis-15-octadecenoic acid, 10-hydroxy-cis-6-octadecenoic acid, 10-hydroxy-cis-6,cis-15-octadecadienoic acid, 10-hydroxy-trans-11-octadecenoic acid, 10-hydroxy-trans-11,cis-15-octadecadienoic acid, 10-hydroxy-cis-6,trans-11-octadecadienoic acid, 10-hydroxy-cis-6,trans-11,cis-15-octadecatrienoic acid, 13-hydroxy-cis-9-octadecenoic acid, 13-hydroxy-cis-9,cis-15-octadecadienoic acid, 13-hydroxy-cis-6,cis-9-octadecadienoic acid, 13-hydroxy-cis-6,cis-9,cis-15-octadecatrienoic acid, 13-hydroxy-cis-5,cis-9-octadecadienoic acid, 13-hydroxy-trans-5,cis-9-octadecadienoic acid, 12-hydroxy-cis-14-eicosenoic acid, 12-hydroxy-cis-14,cis-17-eicosadienoic acid, 12-hydroxy-cis-8,cis-14-eicosadienoic acid, 12-hydroxy-cis-5,cis-8-eicosadienoic acid, 12-hydroxy-cis-8,cis-14,cis-17-eicosatrienoic acid, 12-hydroxy-cis-5,cis-8,cis-14-eicosatrienoic acid, 15-hydroxy-cis-11-eicosenoic acid, 15-hydroxy-cis-11,cis-17-eicosadienoic acid, 15-hydroxy-cis-8,cis-11-eicosadienoic acid, 15-hydroxy-cis-8,cis-11,cis-17-eicosatrienoic acid, 15-hydroxy-cis-5,cis-8,cis-11-eicosatrienoic acid, 15-hydroxy-cis-5,cis-11-eicosadienoic acid, 15-hydroxy-cis-5,cis-11,cis-17-eicosatrienoic acid, 10-hydroxytetradecanoic acid, 10-hydroxyhexadecanoic acid, or 14-hydroxy-cis-4,cis-7,cis-10,cis-16,cis-19-docosapentaenoic acid, the method comprising multimerizing the hydroxylated fatty acid by using a lipase from Candida cylindracea or Candida rugosa to produce the dimer to decamer. <EOS>