Soya vanilla shake

I love homemade milkshakes, especially since the ones in cafes here are way too expensive for what's in them. Like with the yoghurt shakes I make, I think these taste much better with soya milk but they work fine with regular milk too.

Ingredients:
Sweetened soya milk
Vanilla ice cream (the natural type with little parts of the vanilla beans still in it)
Chocolate powder (optional)

Preparation:
1) Fill a glass 2/3 with the soya milk.

2) Top up the remaining 1/3 with the ice cream and stir well. When the mixture is right it should seem liquid but a little thick, like a smoothie. Add more of the soya milk or ice cream if necessary until it's right.

3) Sprinkle a little chocolate powder on top and it's ready.