So... for the risotto, and for so many other things, usually the liquid we add for the actual cooking is some sort of stock or broth.
I don't want to get into the discussion of what's the difference. To me, it seems that the difference is the presence or absence of bones but looking at different definitions will give you different results.
My personal standpoint on the matter? I stay away from store-bought stock or broth. Period!
And I also stay away from the bouillon.
It doesn't take that long to prepare a broth regardless if it is meat, fish, or vegetable. Believe me! And taste-wise... no possible comparison.
As said before, any risotto will taste better any kind of broth is used. But if you don't have any, plain water will do just fine. It won't taste the same, but at least you won't be eating something you have no idea how it was made.
So, just good old plain water can be your last resort for your risotto. But if you have let's say half an hour before doing your risotto you can always prepare a vegetable broth: peel an onion, a carrot, a potato, smash a garlic clove (don't even peel it), and bring them to boil in a large pot with salted water and let boil for 20 minutes. And you are ready to go.
Preparing a meat broth requires some more planning and cooking time.
But it implies as well asking yourself what your are going to do with the boiled meat. Keep in mind one thing about boiling meat.
Putting any meat in cold water, and bring it to boil, will give an excellent broth (and a still eatable boiled meat because the meat released all juices into the water).
Putting any meat into boiling water will give you an excellent tender and juicy boiled meat (and a still decent broth) because all the juices were kept inside the meat.
The bad thing about broth is that there is no way you can compromise somewhere in between.
Boiling time depends on the size of the meat pieces used: but never cook for more than 45 minutes.
Adding some vegetables to a meat broth (added in cold water) will enhance the broth's flavors: carrot, onion (some say that one or two cloves in the onion will taste wonderful), stalk of celery... it depends on your taste... I don't believe in exact recipes...
As for fish broth things get a little more complicated. You need to find a fatty fish to have more flavor. Remember one thing: you will never get a good fish broth if you are going to used fileted fish and I stop here because I know some of you will start shaking your head. Cooking times depends on the size of the fish but they are usually closed to vegetable than to meat cooking times.
Promise me one thing: try to do chicken broth on your own. And I promise you will never ever again buy canned chicken soup.
Are you asking "how"?
Next time you go to the farmers' market, or to your preferred supermarket, buy a couple of chicken (organic will be better) thighs. At home, remove the skin, and bring to boil a large pot with let's say 4 quarts of salted water with a peeled onion and a carrot in it. You decide if you put the thighs in cold or in boiling water. Let boil for 25 minutes and remove the thighs. Add some small pasta, or rice, to the broth and cook according to the cooking instructions.
In the meantime, remove the bones and the cartilage, chop up the meat. Once the pasta, or rice, are cooked, add the meat and some mint leaves.
And believe me: friend(s) and/or significant other(s) will be forever grateful!