Morning broth
tonic.

You can, but it changes the character. Mushroom broth makes a darker, earthier morning cup; beef broth is heavier than most people want first thing. Liquid Gold is what we drink in the morning because it's clean enough to sit before food.

Boiling drives off the more delicate aromatics and can break the broth's gel structure if you're using a homemade or properly set one. A gentle warm-through, until steaming but not bubbling, keeps the texture and the flavour where you want them.

You can warm a few cups of broth at once and keep them in a flask for the morning. The lemon and ginger we'd add fresh each time; lemon juice goes flat in a thermos and ginger keeps developing if it sits in hot liquid for hours.

For a tonic, yes. This isn't breakfast; it's the thing before breakfast. If you want more substance, double the recipe and call it a small soup. Most days, 240ml does what it's there to do.

That depends on your definition of fasting. Bone broth has calories and protein, so it breaks a strict fast. Many people who fast intermittently find a cup of broth a useful bridge between dinner and the next meal; that's an individual call.