Smoothie: a very silly treatise
In my opinion, the perfect smoothie has 3 ingredients; these being bananas, milk, and spices. (Perhaps I should have said categories of ingredient!) I have several thoughts to share on this:
1. The equipment. There are many ways to process foods into a mush, and some are marketed specifically for use in smoothification! My personal choice, however, is a stick mixer. It does the job and it's handy for sauces and soups also. In terms of container; I use a tall, cylindrical plastic container (jug? vase? I'm not sure. It's food safe, anyway) with a diameter of about 8cm. If you use a different one, you might end up with more or less milk than I use - but my measuring methods are vague and not particularly repeatable and frankly, who cares.
2. The bananas. Bananas used for smoothie should be bordering on over-ripe. Ideally, they should be past the point where you don't want to take them for lunch (because you know they have insufficient structural integrity to survive your bag); but before the point where you put them in the freezer, thinking (optimistically) that one day they will be used for banana bread. Their role is to provide sweetness and texture. You can use 2, or 3, or however many your heart desires! Peel them, break them in half (they may do this themselves), and put them in the jug/container/whatever.
3. The milk. You can use whatever sort you like! When there's milk in our house, it's usually "light" cow's milk, so I use that. Personally I haven't found a non-dairy milk with a taste I like - because I don't like change, and I assume it would be very hard to get a plant milk to taste EXACTLY like cow's milk. Lactose free would be fine - you're not likely to notice the extra sweetness in something like a smoothie. In terms of amount, I like to mostly cover the bananas and leave about a dollar coin's height of banana sticking out. What's that, 3cm? Probably.
4. The spices. Which ones you use is up to you, but make your ancient ancestors proud. You want to use ground spices - the stick mixer won't grind things for you, and it looks pretty when they go into the milk! I always use chilli; often I also add cinnamon and ginger, paprika can also be good. Don't be afraid of using too much (though don't be excessive) - if your smoothie isn't brown at the end, you could Definitely have added more spices. Without the spices, a banana smoothie is OK - but rather bland. Then again, some people are wierd and don't like flavour in their food. They're wrong, but they're allowed to be wrong. You don't need spices! (But I think they're pretty good).
Now, some things ARE wrong - especially, adding more ingredients. Things you may be tempted to add, and shouldn't:
1. Mango. Why? The texture is viscous enough, the smoothie is sweet enough, and I don't think you're adding much to the flavour. You want a mango smoothie? Make one, don't hijack a banana smoothie.
2. Berries, or any other sort of fruit. See above - if you want those in your smoothie, you're making a different sort of smoothie and should leave the bananas out. As a side note, I'm not a fan of a mango smoothie, and I'd prefer to just eat the component fruits of almost any other smoothie.
3. Chocolate or coffee. They might complement the banana flavour, but again - if you want those in your drink, make a drink where they're the focus.
4. Honey. Why? It's sweet (and thick) enough already from the banana. Use the honey in tea or biscuits or something instead.
5. Oats. Again, why? The texture is perfectly fine already.
6. Any form of extra protein. There are other, yummier ways to get protein if you need it. If you're the sort of person who needs the extra protein in their smoothie, do Not be fooled - a liquid breakfast/post workout will Not sustain you for long enough! Take the time to EAT something, and you'll feel better overall, and food is delicious.
7. Vegetables or vitamins. See above - enjoy your smoothie, enjoy food, and get them somewhere else.
8. Ice. Your drink is a frappé now. By definition, it is no longer a smoothie.
9. Anything else. You surprise and confuse me; but if by some miracle I can eat whatever you're mixing in, I may yet be convinced.
Finally, if your bananas HAVE got to the "freeze them before they smell and make the other fruit go off" stage, or you're adding in frozen banana for whatever reason; remember that frozen banana is stickier than fresh banana! You may want to add more milk to balance this.
I'm sure a lot of people will disagree with me about some of this. That's fine! You're wrong, but you're allowed to be wrong (as long as you don't try to make your Smoothie Abominations near me, or feed them to me). I hope that someone at least finds this half as entertaining as it was to write!