blood orange, almond and polenta cake with orange scented ganache
My love for blood oranges knows no bounds. I've been enchanted by blood oranges since I was first introduced to them when I was 15. I was on a school trip to Europe and by the time we'd arrived in Italy I was craving both orange juice and steak. The steak could wait until I returned home but not the orange juice. Not even the ridiculously high price could stop me from ordering the juice and when it arrived it was blood red. We thought they'd made a mistake and had given us tomato juice, but one sip revealed there had been no mistake and we'd been served the best orange juice of all, blood orange juice.
I found a recipe for a blood orange cake in 'Love Crumbs' by Nadine Ingram, which she'd named 'A Waltzing Orange Cake'. I waited for blood oranges to return to the fruit shop and a few weeks back, there they were in all their glory. I bought a bag of blood oranges and set to work making both the cake and a batch of blood orange and vanilla marmalade.
Whilst I loved the cake toppings, I found the cake quite dry. I've made many blood orange cakes in the past and thought one of those cakes might work better as a base for those lovely toppings. I returned to the kitchen for round 2 and came up with this recipe for a blood orange, almond amd polenta cake with an orange scented ganache. The cake, which is both gluten free and dairy free, was adapted from a Nicola Lamb recipe whilst the toppings (and instructions) are pure Nadine.
Here's the recipe for you which makes a 17-cm cake. For all my recipes, I use a 250 ml cup and a 20 ml tablespoon. All eggs are 60 grams and my oven is a conventional oven not fan forced, so you may need to reduce your oven temperature by 20°C. To make this cake you'll need 4-5 blood oranges, depending on their size, and 1 lemon. If blood oranges aren't in season, regular oranges will do nicely.
Blood orange, almond and polenta cake with an orange scented ganache - makes a 17-cm cake
Blood orange jelly slices -start this process 2 days ahead
1 blood orange
80g caster sugar
90ml water
¼ tsp cardamom pods, crushed
½ vanilla bean, split and seeds scraped
Orange scented ganache
200g pure cream
½ vanilla bean, split and seeds scraped
½ tsp cardamom pods, crushed
1 blood orange, zested
55g white chocolate good quality, finely chopped
Cake
The zest of 2 blood oranges
The blended flesh of 1-2 blood oranges to make 135g of puree
125g caster sugar
2 eggs
½ cup (125ml) extra virgin olive oil
125g almond meal
50g superfine polenta flour, sifted with 1 tsp baking powder and a pinch of salt
Citrus syrup
¼ cup (55g) caster sugar
1 tbs water
¼ cup (60 mls) freshly squeezed blood orange juice
Juice of ½ lemon
pinch salt
Blood orange jelly slices – start these 2 days before serving the cake.
Slice the oranges into 2 mm-thick rounds using a very sharp knife. Take your time as you want every slice to be completely round without tears. Place the slices in a large bowl and pour over boiling water from the kettle to well cover the slices, then wrap the bowl in plastic film for 6 hours until cold. Repeat the process twice more to make a total of three blanches over an 18-hour period. Don't worry, they can sit for longer if you need to leave them overnight. This is a technique used to soften citrus and remove the bitterness, while maintaining the vibrant colours. It's normally done by bringing the fruit to the boil in a saucepan, however, in the case of delicate orange slices they would be broken up in the process.
Place the sugar, water, cardamom and vanilla bean and seeds in a large, wide saucepan, bring to the boil and simmer for 5 minutes. Discard the blanching water from the oranges and gently add the orange slices to the cardamom syrup, laying them carefully over the base of the saucepan, then cover them with a round piece of baking paper to ensure the top of the slices don't dry out.
Continue to simmer the orange slices on the lowest heat possible for about 1 hour -1 hour 30 minutes or until the syrup reduces to a jelly and coats the oranges in a glossy, translucent glaze. Turn off the heat and let them cool at room temperature. After this they can be stored in the fridge stacked up in a jar with any remaining syrup poured over them for approximately 3 months.
Orange-scented ganache
Place the cream, vanilla, cardamom pods and the orange zest in a small saucepan over medium heat and bring to the boil. Turn off the heat and allow the flavours to mingle for 30 minutes. Meanwhile, place the finely chopped chocolate into a medium bowl and set it beside the stove. Strain the aromatics out of the cream and return the cream to the boil, then pour it over chocolate and stir the ganache until it is smooth and all the chocolate has dissolved. Pour the ganache into a container with a lid and cool in the fridge for 4 hours or overnight.
Cake
Preheat oven to 180°C, conventional. Grease a 17cm-round cake pan and line the tin with baking paper.
Place the grated rind and sugar into a bowl and massage together until the sugar becomes fragrant. Add the eggs and whisk to combine, followed by the oil. Whisk in almond meal and the polenta flour mixture alternating with the blended orange pulp to form a loose batter. Spread into the prepared pan and bake for 55-65 minutes until the top is just firm and a skewer inserted in the centre comes out clean. Cool in pan for 1 hour, then invert onto a wire rack and cool completely.
Syrup
Combine sugar with the water in a small saucepan over medium-low heat, stirring to dissolve the sugar. Bring to a simmer, add the orange juice and cook for 4-6 minutes until thickened and starting to caramelise. Cool syrup, then mix in the juice of ½ lemon and a pinch of salt and stir until combined. Cool completely to room temperature.
To assemble
Remove the cake from the tin by inverting it onto a plate, removing the baking paper and then flipping it back the right way up onto a platter.
Remove the orange-scented ganache from the fridge and give it a good whisk to incorporate any white chocolate that may have settled to the bottom or fat from the cream that may have floated to the top. Whip the ganache in the bowl of an electric mixer using the whisk attachment or use a hand whisk to whisk until firmly whipped, then spread or dollop evenly over the top of the cake.
Arrange the blood orange jelly slices on top, noting that they're difficult to slice through when cutting the cake, so a bit of strategic placement based on the number of guests will make portioning much easier or you can place an orange slice on each plate then cut the cake afterward and drizzle with the syrup to serve.
I took this to a friends place and we served the cake for dessert and it was a triumph! If you don't feel like making the ganache or the blood orange jelly slices, this cake topped with whipped cream and drizzled with some orange syrup is still a delight.
Bye for now,
Jillian
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