Add Ragu recipe

Thanks again, @csswizardry!

recipes/ragu.md

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+# Ragu
+
+**Serves 3–4**
+
+This, like my [chili](https://github.com/csswizardry/recipes/tree/master/chili),
+is a really easy meal that rewards with massive flavour. It’s one you spend
+time preparing and then leave to sit and simmer for hours on end. This isn’t a
+recipe based on anything concrete or traditional, more trial and error and a
+lot of reading anecdotal bolognese/ragu recipes.
+
+## Ingredients
+
+* 400g lean beef mince
+* 200g cubed pancetta
+* 2 x tin chopped tomatoes
+* Large onion, diced
+* Large carrot very finely diced
+* Stick of celery finely diced
+* 2 x large cloves of garlic
+* Glass of red wine
+* Worcestershire sauce
+* Ketchup
+* Fresh basil
+* Parmesan cheese
+* Tomato purée
+
+## Method
+
+1.  Sweat crushed garlic, pancetta, onion, carrot and celery in a small amount
+    of oil in a heavy bottomed pan.
+2.  Once softened, add mince and brown.
+3.  Once mince is browned, add both tins of tomatoes.
+4.  Leave to cook together on a low heat for a while.
+5.  Add a few dashes of Worcestershire sauce and leave to simmer.
+6.  Add red wine, simmer for a while.
+7.  Add plenty of chopped, fresh basil.
+8.  Simmer for a few hours, adjusting flavour with ketchup and Worcestershire
+    sauce as you see fit.
+9.  Leave covered and off the heat overnight, if you can.
+10. If not, cook for as many hours as you possibly can.
+11. 30 minutes before serving, stir in a tablespoon or two of parmesan cheese.
+    This gives the sauce an amazing flavour!
+
+I typically serve ragu with fresh pasta topped with plenty of parmesan and
+fresh, chopped basil. And a beer.
+
+_Original recipe shamelessly stolen from https://github.com/csswizardry/recipes/blob/ba80003e470577c4575c237bcffcc079e258264d/ragu/README.md _