5 {$ E. _2 S5 _0 [5 r R9 U5.39.217.76Whisk the yolks with mustard and vinegar and gradually incorporate the oil small amount at a time. 8 S1 x7 v* h/ x3 } ^# }5.39.217.76Season to taste. 4 ?7 l k( F, d8 B( p9 Ntvb now,tvbnow,bttvbThe sauce can be finished with a bit of boiling water to stabilise it more. $ ]% T3 | _/ U" `3 e Q/ l- h1 q公仔箱論壇The oil used will provide the underlying flavour - traditionally olive oil is used.