Grapefruit Olive Oil Loaf Snack Cake

Ingredients

• zest from 1 red grapefruit
• 1/4 cup grapefruit juice (from about 1/2 red grapefruit)
• 3/4 cup cane sugar
• 1/2 cup plain full fat yogurt
• 3 large eggs, preferably organic
• 2/3 cup extra virgin olive oil (plus more for greasing pan)
• 1 3/4 cups whole wheat pastry flour
• 1 1/2 tsp baking powder
• 1/4 tsp baking soda
• 1/4 tsp salt
• 1 1/2 Tbsp turbinado sugar, for topping
• red grapefruit segments for serving, optional