Try plain yogurt with honey to taste, add some cinnamon pour over any fruit salad. For a really refreshing taste add thinly sliced mint into fruit salad first. This is a hit everytime I serve it, even non fruit eaters.

Not sure if this will help, but try La Pinata in Hayward. They have 5-6 restautrants in the E. Bay and I know I have seen a taco truck. In Alameda they have a taco bar adjacent to thier restaurant and the taco's are great, the same as what's on the truck. Give them a call and see if they can meet your needs. Good Luck K. Mason