Put the date, clementines, spinach and yogurt in your blender first with no ice. My bullet worked perfectly for this with no liquid, as soon as the blades hit the clementines.. BAM the who thing came together.
1 dried date, 2 clementines peeled, 1 cup of raw spinach, ¼ cup of unsweetened non-fat yogurt
Blend until smooth.
Once it's smooth, add the ice cubes and blend again.