Hey Cassie
Great question.
I agree with all the replies saying it's great in roasts, with veg and/or chicken, oily fish, lamb or beef.
And rosemary in baking is fantastic, we've just had focaccia with extra-virgin olive oil, sea salt and rosemary sprinkled on it. In bread it's great, I think it partners especially well with bread rolls made with cheese to have with soups.
Your plant will benefit from regular cutting so its stems make multiple branches. You may have noticed how the branches become bare and woody if left and eventually the plant will be more wood than herb. The woody stems make great skewers when they're fresh and green to use on barbecues though. And it also makes a good contribution to a 'smudge fire' to burn to produce a herby smoke that helps to keep insects away from where you are eating.
If you give your plant a good prune and have a lot of rosemary around I suggest making 'romarinade' which is rosemary whizzed up with olive oil, a little salt and garlic to make a paste. You can then use this straight out of the cupboard or fridge when you fancy a quick blast of woody flavour on veg or grilled meats or fish. It'll mean you won't have to go out in the rain in winter to collect fresh herb
I love it whizzed up with anchovies and garlic as part of a thick salad dressing which is great for salads with one or more of fennel, celeriac, potato, artichoke or radishes.
Rosemary is also a traditional herb to use in brewing beer, add a few ounces of the herb to the boil water to extract the flavours and oils. And it makes an ace liqueur if you steep it in vodka or other spirit, it goes well with lemons in the mix or coriander.
I like to chop it very fine when I use it in risotto, soups and stews so that you don't get speared by the sharp needles which tend to feel like bones.
Lastly, you can propagate your rosemary using stem cuttings, so that you can have more and/or replace the big plant when the time comes.
Hope that's a help
