Hi K :-) I found this on the internet. Having never tried a Luigi Coctail or this recipe, I have no idea whether or not it is what you are looking for but I hope this is what you want. Let us know how you like it.

Luigi recipe

1 1/2 oz Gin
1 1/2 oz Dry Vermouth
1/2 tsp Cointreau
1 tsp Grenadine
1 oz Mandarin Juice

Shake and strain into a cocktail glass. Garnish with a cherry, and serve.