Last night, I made several servings of shake for my kids and myself to have this morning. The kids came over today to do some heavy work in the garden with us,
and I thought I'd surprise them with something cold that would hold and tide them over till lunch.

Long story short, only one son was interested in the protein shake, and now I have two glasses of shake left.

My question - how long will it keep in the fridge?
I wonder if I can keep it two more days for me to have tomorrow and the next day.

Here's what's in the shake:

Protein powder
water
almond butter
tahini
peach
date
cinnamon

I put all the ingredients in together yesterday evening, blended them, and put in the refrigerator. How long will it be good for?

Thanks
Sarit