Ubi Jalar Panggang Jeruk Nipis

Bahan-bahan (4 porsi)

• 1.5 lbs sweet potatoes ($1.99)
• 2 Tbsp olive oil ($0.32)
• 1 tsp cumin ($0.10)
• 1/4 tsp salt ($0.02)
• 1/4 bunch fresh cilantro ($0.25)
• 1 fresh lime ($0.33)