Next time you go to the grocery store stop by the yogurt section. Look specifically at the ingredients for the cherry or strawberry flavors. You’ll more than likely find carmine or cochineal listed.
Unless that could be synthesized from chemicals, that shuts out the kosher dining crowd — and here where other yogurts now use kosher gelatins so they can sell to this crowd. As a Christian I do not worry about this, but if I had Jewish friends who were observant about a biblical diet I would try to respect their wishes.