We visited Macwood and Blue Field in the Nuwara Eliya region in 2017. The tour and tea tasting were free. In Unawatuna we found a store with the most delicious tea for us) Now we can't recover information about the factory and the province of cultivation.
How to choose tea? Super Pekoe, Pekoe, Orange pekoe, FBOP (Flowery Broken Orange Pekoe), Broken Orange Pekoe Dust - depending on your taste preferences. We like Orange pekoe because of its deep flavor and medium strength.
Where can I buy tea? Any specialty tea store in Sri Lanka. They are available on the waterfront in a wide range. In the mountainous regions of Kandy, Ella, Nuwara Eliya there are tea plantations themselves and the factories themselves. In the stores at the factories, the tea was more expensive than on the waterfront, because it is all packed. You can safely take tea by weight from open containers. You need a tasting beforehand, which is described here in detail).