Be Careful having too much as I regretfully found out not everyones body reacts well to a drastic diet change.
You can buy the metal balls for about 99p on eBay if I remember correctly. I had one that came free with another shaker that I use if I’m shaking but I usually blend.
Does the metal ball work well? I I end up just using a fork to mix it
Not as well as a fork.
I find it works quite well, certainly much better than just me shaking alone
I find that starting with 500ml of water before adding your 3 scoops of Huel and using the circular ice shield grid that comes with the shaker really helps break it up well with a good shake, if not smooth then barely noticeable lumps that are small enough to fit through the grid. Stops it from clumping to the inside of the lid too.
I have found that using milk or water the key is adding the liquid first, then the powder the ore liquid. I shake usually for about 20 to 30 seconds. I usually like a thicker shake consistency bit do not incur any lumps.