Garbanzo Stew with Malanga and Calabaza

Name: Garbanzo Stew with Malanga and Calabaza
Ingredients: 1 pound dried chickpeas; Pinch baking soda; 2 tablespoons extra-virgin olive oil; 1 pound cooking ham, cubed; 1 large yellow onion, diced; 1 large green bell pepper, diced; 3 garlic cloves, peeled and diced; 1 teaspoon kosher salt; 1/2 teaspoon freshly ground pepper; 1 cup whole peeled, canned tomatoes in their juice; 1/2 cup dry white wine; 1 teaspoon smoked Spanish paprika (labeled pimenton); 1 dried bay leaf; 1 pound malanga, peeled and quartered; 1/2 pound calabaza (West Indian pumpkin), peeled and cubed