Add 1/4 cup avocado and fold in half before serving.
Add the beans and cook for a further 30 mins before serving.
If serving this later, add the remaining ingredients just before serving.
Add spaghetti and 1 teaspoon of the salt to the boiling water a few minutes before serving.
If you make it ahead of time, omit the coriander leaves, adding them just before serving.
For the best taste, don't add the butter until just before serving.
If you want to make this dish in advance and refrigerate it, do not add the tomatoes until just before serving.
Chill the salad, then add the watercress and olive oil just before serving.
The typical feeding methods include adding warm water before serving.
And it's a great make-ahead option just add in the club soda right before serving.