In  my book, pesto is right up there with nectar and ambrosia, as the food  that the gods stuff their faces with on Mount Olympus, when they are not  busy seducing mortals or sending them on absurd quests for golden  fleeces. This little miracle of delight comes from the region of Genoa,  in Italy (I know Olympus isn't in Italy, for the record, but since the  ancient Greeks and Romans shared a pantheon, I figured it wasn't such a  stretch of the imagination), and is made by grounding together fresh  basil leaves, toasted pine nuts, Parmesan and garlic, and binding the  result in a creamy paste with olive oil and, sometimes, a bit of lemon  juice.
It is traditionally done with a mortar and pestle, but us, time  savy urban cooks, prefer to use the miracle of technology that is the  food processor. Nothing beats the freshly home-made recipe you'll find  below (mostly because you get to control the Parmesan and lemon juice  quantities and make it exactly to you taste), but in emergencies, I  prefer the Fontaine Santé brand of store-bought pesto. I find it tastes  fresher and is easier to work with than other brands, because of it's  lovely gooey texture. 
   
I will provide you with a delicious classic pesto recipe, and two of the most simple, yet elegant and delicious ways to serve it.
Now, a small ingredients lecture. I am a bit of a snob when it comes to getting certain top-notch ingredients… 
If, like  me, you keep a basil plant on your window-sill, picking the leaves you  need for this recipe straight from it might reduce your plant to a  sprout. Since I use fresh basil regularly, I keep my plant for when  small quantities are required - 1/3 cup to 1 cup. When you need more than 1  cup of fresh basil leaves, buying a packaged bunch from the grocery  store is a good idea, unless you plan on waiting until your plant grows  back before using some again. Also, pine nuts are pricey, because they  are actually individually extracted from the pine cones. My suggestion  is to buy them in bulk, and freeze what you are not using in a sealable  plastic container. Parmegginano regiano is an absolute necessity for an  authentic pesto. Either grate it yourself or buy it grated, from a  fromagerie or a quality grocery store cheese counter. I'll paraphrase  the bombastic Nadia G. about this; if it doesn't have to be  refrigerated, it's not cheese!! And finally, "olive oil" means  "cold-pressed extra-virgin olive oil". This liquid gold is worth every  penny, both for it's taste and health benefits. My favorite brand is  Olio Tribeca, but when I can't find it, I apply a price-quality  selection similar to what I'd use buying wine: if you pay less than $  15, expect to get what you pay for… Target gourmet or ethnic  grocery-stores to find the real deal, imported from Italy, Greece or  Portugal.
Now that we have established quality standards, let's get cookin'! This pesto is from Jamie Oliver's "Jamie's Dinners", with a few adjustments.
2 cloves of garlic, chopped
3 large handfuls of fresh basil, leaves picked and chopped
1 handful of pine nuts, lightly toasted
1 large handful of grated Parmesan cheese
Olive oil
Sea salt
1 squeeze of lemon juice
Pulse  the garlic and basil in a food processor with a pinch of salt. Add the  pine nuts to the mixture and pulse again. Transfer to a bowl and add  half the Parmesan. Stir gently and add olive oil slowly; you need just  enough to bind the sauce and give it an oozy consistency. Season to  taste and add most of the remaining cheese. Poor in more oil and taste  again. Keep adding cheese and oil until you are happy with the taste and  consistency. Add a little squeeze of lemon juice at the end.
Toasting pine nuts is quite simple: put your little guys in a small dry frying pan, over medium heat, and toss them around a few minutes, until they are lightly colored, and transfer them into a bowl until you add them to the pesto.
Of course, you can keep  everything in the food processor until the pesto is done; I do that mostly because  I don't like to clean more dishes than I need. Be careful to  get your taste-test with a spoon: there are sharp blades in that food  processor! Don't freak out if once pulsed, it looks like you don't have enough basil in there. Once you add the oil and the other ingredients, this recipe will give you four helpings.
It took a couple of attempts before I balanced out the garlic/cheese flavors to my taste (too much garlic drowns the basil taste and too much cheese can make the pesto a bit biter), but practice makes perfect! Even a slightly flawed pesto is a lovely thing so don't be afraid of not reaching perfection on the first shot.
Pesto can be kept in a sealed container in the fridge for up to a week.  If you know you won't use it right away, freeze it and simply defrost  it overnight in the fridge before using. Yes, this means you can double  or triple the recipe and make yourself a pesto stash! Of course, if you  start doing that compulsively, you may want to seek a 12-steps program;  we can go together!
Now, we  all know how delicious pesto can be as a sauce to any pasta dish. My  personal favorite way to serve it is to cube two chicken breasts and  cook them in a pan with a bit of olive oil, then add them to some  freshly cooked penne, and top the whole deal with pesto. Death by  delicious. 
But if you are both lazy and love salmon, here is something I  found in "Jamie's Food Revolution" and that I am now severely addicted  to. The method is for individual portions, but if you have someone to  impress, such as in-laws or colleagues, you can use the same steps with  one of those huge, long salmon fillets. I am going to assume you already  know that salmon is positively full of omega-3, vitamin D and good  cholesterol, and spare you the "why you should eat lots and lots of  fish" talk… 
2 handfuls of green beans
2 lemons
2 7 ounces salmon fillets
4 heaped tablespoons pesto
olive oil
sea salt and pepper
Preheat  the oven to 400 degrees. Trim the beans by cutting off the stalk ends  but keeping the wispy tips. Halve one of the lemons. Take a yard of  aluminum foil and fold it in half to have two layers. Put a handful of  green beans in the middle and lay a salmon filet, skin side down, across  the beans and spoon over 2 tablespoons of pesto, to cover the fish  well. Drizzle with olive oil and squeeze the juice of one of the lemon  halves, season with salt and pepper. Pull the aluminum foil together and  scrunch them to make a parcel. Repeat these steps for the second parcel  and place both on a sheet pan. But the pan in the oven and cook for 20  minutes. Remove from the oven and let it stand for a minute before  carefully unwrapping and checking if the salmon is cooked to your  liking. Serve the parcels on plates, with lemon wedges.
I like to have a bit of still-pink fish at the heart of the fillet, but if you like it cooked through, leave it in the oven for 5 more minutes.
Keep some  crusty bread around, to mop up the oil and pesto that will remain in  the parcels; no waste! It makes quite a filling helping, but it's lovely  with a few steamed baby potatoes if you want to add a bit of carbs to  the ensemble. A crisp white wine is great with this; my pick would be  Vivolo di Sasso, or any nice sauvignon blanc that you like.
This post  is dedicated to the loving memory of my friend Alex, also known occasionally  as the Mad Macaque, who loved pesto even more than I did, and who passed away 2 years ago. I think of him  every time I make a fresh batch, and every time I listen to Bad  Religion's "Raise Your Voice" and NOFX's "Stinkin' In My Eye". I miss  you, you big moron. Love!