In a large saucepan, add potatoes and broth along with 1 cup (250 mL) of water. Add onion and sauté until translucent. Stir in garlic, cumin and cayenne. Add potatoes, broth and water. Stir in kale by large handfuls, adding more as the leaves wilt. It will seem like too much kale at first, but the volume reduces as the leaves cook. Add half the lemon juice.
Cover and simmer on medium-low heat for 15 min., until kale is tender and potatoes are cooked through and easily pierced with a knife.
Add spoonfuls of remaining lemon juice to adjust flavour, if desired. Garnish with the red pepper just before serving.
Kale is a hearty, leafy green that contains vitamins, minerals and phytochemicals – natural plant compounds known to protect against illness and disease.