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Chocolate and orange have long been one of my favorite combinations. So are raspberry and (dark) chocolate and more recently passion fruit and ruby chocolate, but I digress. Naturally, I was drawn to the Pim's cookies during my study abroad time in France and I loved the Jaffa cakes during my visit to Dublin a while back. There's even a debate on which one is best, but I'll stay out of that one. :)
Inspired by this combination, I started playing around with ideas on how to bring it together in a home made dessert. I made some muffin sized sponge cakelets topped with orange jelly and chocolate, but though they were tasty the ratios were off and the sponge texture wasn't quite what I envisioned.
Later on, I decided to steer away from the individual dessert format and into something that could work well as a centerpiece dessert, where I could focus on the flavor and texture components without the tedious piecewise assembly. Thus, I settled on the swiss roll.
I made a pretty simple angel food cake style sponge, which is light, moist and flexible so it holds up to rolling and works as a great flavor canvas. For the rendition pictured here, I actually gave the whole thing a fall flavor twist, I'll include the variation details in the recipe notes - the sponge got a good dose of pumpkin spice mix to set the tone.
While the sponge cooled, I worked on the next essential layer - the orange jelly. For jelly made from scratch, the ratio I used is 1 tsp of gelatin powder to 1 cup of liquid - in this case, orange juice, orange zest and rooibos tea combined for the base, in which I dissolved bloomed and melted gelatin powder. For my fall inspired version, I used a pumpkin spice rooibos packet. I lined a pan the same size as the sponge with plastic wrap and poured the jelly mix inside, then set in the fridge to set.

Finally, it was time for the chocolate - I of course planned to melt and temper some chocolate for the signature shell on top, but I couldn't pass up the opportunity to include it inside the roll as well, after all what's a swiss roll without a creamy filling? I made a simple chocolate mousse using chocolate and cream - melted the chocolate using part of the cream (I also melted a bit of gelatin to help stabilize the mousse), then let it cool to almost room temperature. Then, I whipped the remaining heavy cream and folded the ganache gently and gradually. I let it chill in the fridge before spreading it on the sponge and jelly for final assembly.
Last but not least, a Jaffa cake is not complete with the snap of a layer of chocolate - I tempered some dark chocolate and drizzled it over the roll to create a hay effect for the fall theme. you could also just pour a thin layer all over for a shell on top. This is a pretty well explained step by step to temper chocolate, I'm still working to hone my own skills so I claim no expertise in this area.
I wish I had more progress shots to illustrate these steps, but I was a bit too eager to get to the decorating part for the fall inspired jaffa roll so I put it together quickly while running ideas through my head of how I would decorate it. I made a batch of these fantastic pumpkin spiced marshmallows, which I topped with orange and white sprinkles and cut in the shape of pumpkins and leaves.
Jaffa Cake Roll
Sponge Ingredients
- 2 eggs, separated
- 30g sugar
- 2 tsp lemon juice
- 35g milk
- 23g oil
- 7g cornstarch
- 30g flour
Method
- Preheat oven to 325F, line a quarter sheet pan with parchment.
- Separate eggs into two medium bowls, set whites aside for the moment.
- Whisk oil and milk into egg yolks until smooth.
- Sift flour and cornstarch into yolk mixture, whisk until well combined.
- With clean whisk or hand mixer attachments, whisk egg whites until foamy.
- Gradually add sugar while continuing to whisk, until soft peaks are achieved.
- Add lemon juice and keep whisking to stiff peaks.
- Fold egg whites into egg yolk mixture in 2-3 additions, careful not to deflate the whites too much.
- Spread batter evenly in prepared pan and bake 25-30 minutes until set and lightly golden.
- Transfer sponge to a cooling rack with the parchment lining and lay another sheet of parchment on top to prevent drying out. Let cool completely.
Jelly Ingredients
- 1 cup orange juice
- 2 tbsp orange zest
- 2 tbsp honey
- 1/2 cup water (or an herbal tea, if you's like some floral notes)
- 1 tbsp powdered gelatin
Method
- Mix gelatin and water/tea in a small bowl and let sit for the gelatin to bloom.
- Gently warm up to melt gelatin - this can be done in the microwave in short 20s intervals or over a bowl of hot water.
- Pour melted gelatin in a medium bowl along with all the remaining ingredients (orange juice, zest, honey).
- Line a pan the same size as the sponge (quarter sheet pan for this recipe) with plastic wrap and pour enough of the jelly mixture to achieve 1/4" thick layer. Let this chill in the fridge until set.
- When ready, use plastic sheet to transfer jelly to the top of the sponge layer.
Chocolate Mousse
I used this recipe, except I mixed in darker chocolate with the semisweet for more depth of flavor.
Assembly
- lay out cooled sponge on work surface on a piece of parchment
- place jelly sheet on top, leaving 1/2" from one short edge and trimming the other end to make it just a bit smaller than the surface of the sponge
- spread chilled mousse on top with an offset spatula to a uniform thickness of about 3/4"
- using the parchment, roll the sponge tightly starting with the edge where the jelly left 1/2" space, careful not to let the jelly slip out as you do this
- twist the ends of the parchment sheet to secure the roll seam side down, and place in the fridge to set
- before serving, drizzle or spread tempered chocolate on top and decorate as desired
- slice with a clean knife to serve (dipping in warm water and wiping off with a kitchen towel before cutting ensures a clean line)
Notes
- for a fall themed variation, I made the following changes to the recipe: added 2 tsp of pumpkin spice seasoning to the sponge at the same time as the dry ingredients; I used pumpkin spiced rooibos tea instead of water in the jelly mix; I added a pinch of nutmeg to the chocolate mousse
- I like desserts that are more subtly sweet, so I didn't add a lot of sweetness to the orange jelly. Consider including up to 1/4cup of sugar to the jelly to taste if you prefer.