Butter an 8-1/2-inch loaf pan; dust with sugar and tap out the excess - for this cake, bakers’ spray isn’t as good as butter and sugar; place on a baking sheet.
In a medium bowl, whisk the 1 1/2 cups flour, baking powder, cardamom, ginger and salt together.
In a large bowl, place the sugar and grate the zest of the lemon over the sugar.
Squeeze the lemon to produce 3 tablespoons juice; set aside.
Using your fingers, rub the sugar and zest together until the mixture is moist and aromatic.
One at a time, add the eggs, whisking well after each.
Whisk in the juice, followed by the heavy cream.
Still using the whisk, gently stir the dry ingredients into the batter in two additions.
Stir the vanilla into the melted butter, and then gradually blend the butter into the batter; the batter will be thick and have a beautiful sheen.
Scrape it into the loaf pan.
Place in pre-heated oven and bake for 70 to 75 minutes (if the cake looks as if it’s getting too dark too quickly, tent it loosely with foil) or until a tester inserted deep into the center of the cake comes out clean.
Remove from oven and transfer to a rack; let rest for 5 minutes; carefully run a blunt knife between the sides of the cake and the pan; invert onto the rack, and turn over.
Glaze now, or cool to room temperature.
To prepare the glaze:
In a small saucepan, bring the marmalade and water to a boil.
Brush the glaze over the top of the warm cake, and allow to it to set for 2 hours.
The glaze will remain slightly tacky.
To store the cake:
When the cake is completely cool, wrap in plastic to store.
If it’s glazed, wrap loosely on top.
Notes
With this, as with any cake or sweet bread, prep the pan with butter and sugar. Yes, sugar, which adds a crunchy note, and has never, ever produced a stuck loaf or cake.