Although uncompetitive economically, bitumen can be made from nonpetroleum-based renewable resources such as sugar, molasses and rice, corn and potato starches.
ɔːlðˈoʊ ʌŋkəmpˈɛɾᵻtˌɪv ˌiːkənˈɑːmɪkli, bɪtˈuːmɛn kæn biː mˌeɪd fɹʌm nˌɑːnpətɹˈoʊliːəmbˈeɪst ɹᵻnˈuːəbəl ɹᵻsˈoːɹsᵻz sˈʌtʃ ɐz ʃˈʊɡɚ, məlˈæsᵻz ænd ɹˈaɪs, kˈɔːɹn ænd pətˈeɪɾoʊ stˈɑːɹtʃᵻz.