ters ▁migr ated ▁to ▁the ▁recon quer ed ▁Christian ▁city ▁of ▁Val encia , ▁out lying ▁sub ur bs ▁of ▁which ▁such ▁as ▁Man ises ▁and ▁Pat erna ▁became ▁the ▁most ▁important ▁cent res , ▁manufact uring ▁mainly ▁for ▁Christian ▁mark ets ▁in ▁styles ▁increasing ly ▁influenced ▁by ▁European ▁decor ation , ▁though ▁retain ing ▁a ▁distinct ▁character . ▁ ▁The ▁pot ters ▁were ▁mostly ▁still ▁Muslim ▁or ▁Mor is co . ▁▁ ▁In ▁a ▁rare ▁manuscript ▁from ▁K ash an ▁compiled ▁by ▁Ab ul q ass im ▁in ▁ 1 3 0 1 , ▁there ▁is ▁a ▁complete ▁description ▁of ▁how ▁f ai ence ▁production ▁was ▁carried ▁out . ▁ ▁F rit ▁was ▁made ▁of ▁ten ▁parts ▁of ▁pow der ed ▁quart z , ▁one ▁part ▁of ▁cl ay ▁and ▁one ▁part ▁of ▁gla ze ▁mixture . ▁The ▁addition ▁of ▁greater ▁amounts ▁of ▁cl ay ▁made ▁wheel ▁throwing ▁of ▁the ▁f ai ence ▁easier , ▁and ▁allowed ▁a ▁better ▁quality ▁of ▁work , ▁because ▁otherwise ▁the ▁material ▁had ▁little ▁pl astic ity . ▁ ▁The ▁gla ze ▁itself ▁is ▁“ formed ▁of ▁a ▁roughly ▁equal ▁mixture ▁of ▁ground ▁quart z ▁and ▁the ▁as hes ▁of ▁desert ▁plants ▁which ▁contain ▁a ▁very ▁high ▁proportion ▁of ▁al kal ine ▁sal ts . ▁ ▁These ▁act ▁as ▁a ▁flux ▁and ▁cause ▁the ▁quart z ▁to ▁vit r ify ▁at ▁a ▁manage able ▁temperature . ▁ ▁The ▁two ▁alone ▁will ▁produce ▁a ▁transparent ▁gla ze ”. ▁Lane ▁compared ▁this ▁material ▁with ▁the ▁French ▁p âte ▁tender