Bijou means ‘jewel’ in french. The original recipe calls for equal parts, which is pretty intense. Then Dale Degroff in the 90s updated it to 1.5/0.75/0.75. With Barr Hill the proportions given work best!
2 oz Barr Hill Gin
0.5 oz Sweet Vermouth
0.5 oz Green Chartreuse
2 dashes Orange Bitters
Combine ingredients in mixing glass, add ice, stir, strain into a cocktail glass. Garnish with an orange twist. This cocktail also works well served over ice.
c. late 1882 Harry Johnson in ‘The Bartenders Manual’ printed in 1900