Add freekeh, water, salt, and pepper in a medium sauce pan, and place over medium heat. Simmer for 8 to 10 minutes until freekeh is soft and water is almost completely absorbed. Remove from heat, add peas, and cover the pan. Steam for 10 minutes more.
Transfer freekeh and peas to a mixing bowl. Add extra virgin olive oil, lemon zest and juice, and fresh mint. Taste and adjust seasoning with salt and pepper before serving. Garnish with sumac.