green smoothies rock!
i get a terrible blood sugar reading with a fruit smoothie or juice, but if i blend in a large handful of spinach (that is blend, not juice), the reading is much lower.
the best reading of all comes from blending the whole fruit, with the whole veg. tastes like fruit, cant taste the veg (usually courgette, spinach or kale ands sometimes avocado). that barely blips my blood glucose.