Four steps.
Step 1
Squeeze the grapefruit
Squeeze the slice over the glass and keep it for the end.
Step 2
Dissolve the sachet
A splash of cold water, stir until it’s gone.
Step 3
Add the ice, top with soda
One large cube melts slowest.
Step 4
Stand the slice in it
Wedge it upright against the ice.
Then
