Chocolate Mousse Bavarian

I misplaced my mom's chocolate mousse recipe and have searched for a long time to find one that's similar - and I found it! On blog "Baywire" (Dianne Smith) - thank you!!!! It is the one and tastes just like my mom's!! I am rewriting it how I made it.

1 envelope unflavoured gelatin (7 g)
1/2 cup cold water
100 g sugar 
30 g unsweetened cocoa 
1/4 tsp salt 
1 can evaporated milk = 240 ml + the rest of the can (about 2/3 cups)
1 TBS (15 ml) vanilla essence 

METHOD:

1. Put the gelatin and cold water in a 1L saucepan and let the mixture soften
2. Stir in well the sugar, cocoa and salt
3. Stir the mixture over medium heat until the gelatin and sugar dissolve completely, about 5 minutes - DO NOT BOIL. Then take the saucepan off the heat.
4. Stir in 240 ml of the evaporated milk
5. Chill the mixture in the bowl you want to use with your electric beater in the fridge until firm and looks set - this can take half an hour or more
6. With the electric beater, beat in at a low speed the rest of the evaporated milk and the vanilla essence until the mixture is broken up (well combined)
7. Beat at high speed until the mixture fills the bowl - this can take about 20 minutes or more, depending on your electric mixer; until the mixture starts getting firm and making large foamy bubbles
8. Let it stand for a few minutes or until the mixture makes mounds when you drop it off a spoon
9. Heap into dessert bowls and chill until ready to serve

Serves 4