Vegetable Patties With Kale & Sweet Potatoes

Ingredients

• 630 g white potatoes (2 large, peeled (1.4 lbs.))
• 360 g sweet potato (1 large, peeled (0.8 lb.))
• 1/2 teaspoon salt
• 2 tablespoons olive oil
• 1 medium onion (finely diced)
• 80 g kale (leaves without stems, 2 cups tightly packed)
• 3 cloves garlic (finely diced)
• Zest of 1 lemon (or just about)
• 2/3 teaspoon salt
• 1/2 teaspoon pepper
• 1 teaspoon dried thyme
• 1 egg
• 3 tablespoons flaxseed meal (ground flaxseed)
• 1 teaspoon baking powder
• 1 cup gluten-free flour (see notes + extra for dusting)
• Olive oil or coconut oil for cooking