First, buy some strawberries, two bottles of milk and one bottle of yogurt.
Second, wash the strawberries and cut them up, and put some in the blender.
Third, put the strawberries in the glass and crush the strawberries.
Next, pour a bottle of yogurt into the glass.
Then, pour two bottles of milk into the blender.
After that, turn on the blender,
Finally, pour the milk shake into the glass and drink it.