I need you to give steps and ingredients used when making sweet potato cookies using it indigenous resources

• Wash, peel, and chop one medium sweet potato. Boil or steam it until it is very soft and tender (this usually takes about 15-20 minutes).
• Drain the cooked sweet potato well and mash it thoroughly until it's smooth. Allow it to cool completely before using. You will need 1 cup of this mashed sweet potato.

• Preheat your oven to 375°F (190°C).
• Prepare your baking sheets by lining them with greaseproof paper or lightly greasing them with a little oil or butter.

• In a large mixing bowl, combine the softened butter or local cooking fat, granulated sugar, and brown sugar. Beat them together until the mixture is light and fluffy. You can use a wooden spoon or a whisk for this.
• Add the egg and mix well until it's fully incorporated into the sugar mixture.
• Stir in the cooled mashed sweet potato until it's evenly mixed throughout.

• In a separate medium bowl, whisk together the flour, baking soda, and salt. If you are using the optional cinnamon, nutmeg, and ginger (or other local spices), add them to this dry mixture as well.

• Gradually add the dry ingredient mixture to the wet ingredient mixture. Mix gently until just combined. Be careful not to overmix the dough.
• If you are adding local nuts or dried local fruits, fold them into the dough now.

• Drop rounded tablespoons of the cookie dough onto your prepared baking sheets, leaving some space (about 2 inches) between each cookie.
• Bake for 10-12 minutes, or until the edges of the cookies are lightly golden brown and the centers appear set.
• Allow the cookies to cool on the baking sheets for a few minutes before carefully transferring them to a wire rack or a clean surface to cool completely.

Enjoy your homemade sweet potato cookies!