Useful if you're Splurging. Useful if you're not Splurging. A good beverage is an all-round good egg.
Maybe you like tea. Go with that.
Maybe you like coffee. Why not?
Me, I like iced coffee. That one's great for summer.
I go through what I call drink fads. At one point in time I'll have a tendency towards iced coffees. At the same time the next year I'll be drinking chai tea all the time. Well, that's me now.
Whenever I'm writing, I have a chai tea. What I like to do is fire up the computer, open up my manuscript, read over the last few lines and skim the last page or two to get my grounding, and then go off to make my chai. While the kettle's boiling and as I make up the drink, I'm free to think about how I'm going to approach the next page. I love this because then, when I sit down, my mind's already "warmed up", so to speak. I've got an idea of where I'm going and how to start off.
Maybe I don't know how to start, and that's fine as well. I've got a drink to occupy myself with while I think.
One more perk of this little "tool" is the subconscious association I've undoubtedly developed between having a chai tea andactually writing.
Try it out if you want. It might work for you. It might not. We all know how subjective writers are.