Rhubarb & Ginger Tea Crumble in a cup! A super zesty, rhubarby drink with a sweet ginger kick. Rhubarb lovers - this is for you. INGREDIENTS Rhubarb 50%, ginger 50%..  naturally caffeine free MATERIALS tea temple: made from plant starch - pop in your council food waste inner bag: made from wood pulp - pop in your home compost outer carton: made from sustainable cardboard- recycle me plastic free: certified by A Plastic Planet