Homemade Danish tartlets (tarteletter) with ham, peas and carrots

Danish tartlets (tarteletter) with a filling of creamed peas and carrots and ham, – an old Danish classic that tastes absolutely wonderful.
The other day we had glazed ham, and we made a proper whopper of a joint so there would be enough for a batch of tartlets, – or actually several batches, but the rest goes in the freezer.
Instead of making a roux-based sauce, we make ours with potatoes, the potato cooking water and whipping cream, which gives a sauce full of flavour with a lovely creamy consistency.