BF/FB and I went out and came across some really fabulous chocolate chips. Making this recipe for a small batch of chocolate chip cookies and it calls for 1.5 teaspoons milk. Can I just use some yogurt? Coffee?

ETA: I ended up using the yogurt. Thanks to lbreeze for reminding me to thin out the yogurt. Even with it thinned out, the dough was stiff, so I added still more water.

btw, this recipe made about 16 cookies , so i'm wondering if I made a mistake.