▁from ▁their ▁ 1 9 7 4 ▁album ▁Hero ▁and ▁Hero ine <0x0A> </s> ▁Fo ie ▁gr as ▁( , ▁; ▁) ▁is ▁a ▁special ty ▁food ▁product ▁made ▁of ▁the ▁li ver ▁of ▁a ▁du ck ▁or ▁go ose . ▁By ▁French ▁law , ▁fo ie ▁gr as ▁is ▁defined ▁as ▁the ▁li ver ▁of ▁a ▁du ck ▁or ▁go ose ▁f atten ed ▁by ▁force - feed ing ▁corn ▁with ▁a ▁feed ing ▁t ube , ▁a ▁process ▁also ▁known ▁as ▁g av age . ▁In ▁Spain ▁and ▁other ▁countries , ▁it ▁is ▁occasionally ▁produced ▁using ▁natural ▁feed ing . ▁D uck s ▁are ▁force - f ed ▁twice ▁a ▁day ▁for ▁ 1 2 . 5 ▁days ▁and ▁ge ese ▁three ▁times ▁a ▁day ▁for ▁around ▁ 1 7 ▁days . ▁D uck s ▁are ▁typically ▁sla ugh tered ▁at ▁ 1 0 0 ▁days ▁and ▁ge ese ▁at ▁ 1 1 2 ▁days . ▁ ▁Fo ie ▁gr as ▁is ▁a ▁popular ▁and ▁well - known ▁del ic acy ▁in ▁French ▁cu is ine . ▁ ▁Its ▁flav or ▁is ▁described ▁as ▁rich , ▁but tery , ▁and ▁del icate , ▁unlike ▁that ▁of ▁an ▁ordinary ▁du ck ▁or ▁go ose ▁li ver . ▁Fo ie ▁gr as ▁is ▁sold ▁whole , ▁or ▁is ▁prepared ▁into ▁m ous se , ▁par f ait , ▁or ▁p â té , ▁and ▁may ▁also ▁be ▁served ▁as ▁an ▁accompan iment ▁to ▁another ▁food ▁item , ▁such ▁as ▁ste ak . ▁French