425g/mlprotein shakeI used Rokeby chocolate protein shake, see notes (other flavours work too)
25ghigh protein milkor an extra 25g/ml protein shake if yours is more than 425g/ml
Pinchfine salt
Instructions
Whisk the white sugar and xanthan gum together in a medium mixing bowl. Have all the ingredients ready to go as xanthan gum is a little finnicky to work with (but makes for a deliciously creamy protein ice cream).
Whisk quickly as you add the agave syrup – it should thicken into a paste within seconds. Xanthan gum gels up quickly so thoroughly and quickly whisk to disperse it evenly.
Quickly add the remaining ingredients and whisk well to combine. Use a silicon spatula to scrape the bowl and ensure no clumps of xanthan gum are stuck to the edges.
Pour all of the mixture into your 470ml Ninja Creami tub. Freeze with the lid off for 16-24 hours. This helps prevent the mixture from developing a hump which can damage the machine.
When you are ready to eat, process the mixture on the ice cream function. I find this mixture benefits from two spins on ice cream.
Return leftovers to the fridge with the lid on.
Notes
Xanthan gum clumps up when it hits liquid which is why it is mixed with a small amount of sugar at the start. I have tested this recipe with and without the sugar and found it was tangibly creamier with the sugar added as it better disperses the xanthan gum.
The variety of protein shake matters – they all have different ingredients and nutritional makeups. I have tested Rokeby and Oak and will update the post as I test more varieties. Please note that I can only test varieties available in Australia. Rokeby contains 30g protein, 6.5g fat and 25g sugar per 425ml of product. Oak vanilla has a similar nutritional value.
Oak vanilla worked well in this recipe despite not containing regular sugar as Rokeby does.
Within these parameters, you can use any flavour you like - I have also tested Rokeby strawberry flavour and it worked well.
I tested weighing the Rokeby and Oak protein shakes and they were the same in ml as they were in gram weight. So, 425ml = 425g.
If you are using another product, please ensure it is as close to these values as possible to ensure a good result. Sugar and fat play a big role in a good ice cream, so using one with far more or far less sugar or fat will result in a very different ice cream.
Keyword High protein ice cream, Ninja Creami protein ice cream, Protein shake ice cream, Protein shake Ninja Creami