Chicken Thighs with Lemon Sauce for 3

Scaled to serve 4

Recipe from https://recipes.anovaculinary.com/recipe/sous-vide-chicken-thighs-with-lemon-sauce/ .

1.3 tbsp of olive oilheat in skillet on med-highsear until well brownedserve
1.3 tbsp of butter for searing
1200.0 g of chicken thighsseasonvac bagsous vide 74degC for 2hpat dry
1.3 salt for chicken
1.3 pepper for chicken
1.3 tbsp of butter for chicken
1.3 onionchop finelybrownsimmer until thick glazeremove from heatwhisk in slowlyseason to taste
1.3 tsp of butter for onion
313.3 ml of beef stock
86.7 ml of lemon juicewhisk
2.7 egg yolks