The Sugar Shack now has its own place for you to go get cake from.
The Senok Te Kade sells packaged Senok Tea, an import product, marketed mainly to tourists and sold sparsely within Sri Lanka.
The Heladiv Tea Club does a relatively affordable range of tasty waffles, sandwiches and teas at the Dutch Hospital. You can also get a decent bottle of wine here for just Rs. 2000.