first time baby food

Angel • Lil Sebastian born 9/18/16. I've never been so in love.
What do you mix your baby food with? I'm trying to do homemade baby food (avocado/banana etc) and it says to mix with water but I've also read that babies shouldn't have water??? I could use my breast milk but I haven't pumped in ages so I would have to start up again? Any advice?