The famous drink, the Gibeau Orange Julep, was first marketed in 1932.
In addition to the storefront, The Orange Julep juice is also retailed, and there are recipes available online.
Propos Montreal claims to have found the patent for the recipe.
However, it was patented by the current owner in 1993.
As outlined in the patent, No.
2083584, filed in English by Gibeau, the recipe explains that the fruit juice is deacidified by the mixture of skimmed milk powder and pectin before adding the juice concentrate and the natural vanilla flavor.
This gives the drink a typical, sweet mouthfeel without the acidity of traditional juice.

Orange Juleps go for $2.70-$6.90 within the normal cup size range, or by the jug for $11.20.
The drink is sold alongside fast-food items like hot dogs (by Nathan's Famous), burgers, fries, and poutine.

Orange Julep offers spaghetti and meat sauce for $6.65.
George St-Pierre, a Canadian mixed martial artist, spoke of it in a 2014 documentary about his life, claiming it as one of the city's best kept secrets: “I think it’s important to remember where you come from.
As for the Orange Julep…I’ve been going there for like fifteen years (...) I like the spaghetti there, I love it!”.

There are also vegetarian options: the veggie burger, veggie hot dogs, and veggie pogos.
The famous drink, the Gibeau Orange Julep, was first marketed in 1932. In addition to the storefront, The Orange Julep juice is also retailed, and there are recipes available online. Propos Montreal claims to have found the patent for the recipe. However, it was patented by the current owner in 1993. As outlined in the patent, No. 2083584, filed in English by Gibeau, the recipe explains that the fruit juice is deacidified by the mixture of skimmed milk powder and pectin before adding the juice concentrate and the natural vanilla flavor. This gives the drink a typical, sweet mouthfeel without the acidity of traditional juice.
Orange Juleps go for $2.70-$6.90 within the normal cup size range, or by the jug for $11.20. The drink is sold alongside fast-food items like hot dogs (by Nathan's Famous), burgers, fries, and poutine. 
Orange Julep offers spaghetti and meat sauce for $6.65. George St-Pierre, a Canadian mixed martial artist, spoke of it in a 2014 documentary about his life, claiming it as one of the city's best kept secrets: “I think it’s important to remember where you come from. As for the Orange Julep…I’ve been going there for like fifteen years (...) I like the spaghetti there, I love it!”. 
There are also vegetarian options: the veggie burger, veggie hot dogs, and veggie pogos.
Gibeau Orange Julep