Hiding horrible after taste from stevia ?

[fendertele]

I bought 5kg of chocolate protein that uses stevia as its sweetener and it tastes awful.

So far i've tried mixing it with greek yoghurt... adding a few teaspoons of xylitol.... adding cinnamon but nothing works would be a shame to bin 60 GBP worth of protein powder but it makes feel boakish drinking/eating it.

Any tips would be great.

Thanks.