Sourdough Caramel Macchiato Tres Leches Cake — Flavors, Inclusions & Pairings
The Flavor Profile
This cake is built in layers, and you taste every one. It starts as a tender vanilla cake — 240 g of sourdough discard whisked with eggs, milk, melted butter, vanilla, and sugar, with 1½ cups of all-purpose flour, baking powder, and salt folded in — baked in a 9 by 13-inch pan at 350°F for 28 to 32 minutes until lightly golden. Then it changes completely.
Once cooled, you poke holes across the surface and slowly pour over a coffee tres leches of sweetened condensed milk, evaporated milk, whole milk, espresso powder, and vanilla. After at least four hours in the fridge — overnight is better — the crumb is saturated, soft, and deeply coffee-forward, finished with whipped cream and a generous drizzle of caramel. The discard never shouts; it sits under the vanilla and coffee as a quiet depth, keeping a very sweet, creamy cake from tasting flat.
How Inclusions Fit This Recipe
A soaked cake needs more thought than a loaf, because anything baked into the crumb spends hours sitting in sweet coffee milk. The batter gives you one clean moment: after the dry ingredients go in, the recipe warns you to mix only until no pockets of flour remain, so fold batter inclusions in with those last few strokes and stop.
Anything you want to stay crisp belongs somewhere else — scattered over the whipped cream at serving time, where the soak cannot reach it. Amounts below are based on the roughly 180 g of flour in the 1½ cups. Keep total batter additions between 10% and 30% of flour weight — about 18 to 54 g — so the crumb still bakes tender enough to absorb the soak evenly.
The Best Inclusions for This Cake
Dark Chocolate Chunks
27 g dark chocolate chunks (15% of flour weight), roughly chopped. Fold them into the batter with the last strokes, right before it goes into the pan. Coffee, caramel, and dark chocolate are the three flavors of the drink this cake is named after, and chunks hold their shape through the bake and the soak better than chips, so you still get distinct bittersweet pockets in a crumb that has otherwise gone completely soft.
Dried Tart Cherries
36 g dried tart cherries (20%), chopped if they are large. Fold them into the batter at the end of mixing. A tres leches is rich from every direction — condensed milk, caramel, whipped cream — and tart cherries are the one bite that pushes back. They soften during the long chill, turning jammy against the coffee soak, and their acidity keeps a generous square from feeling heavy.
White Chocolate Chips
27 g white chocolate chips (15%). Fold them in gently with the final strokes and spread the batter evenly so they are not all hiding in one corner. White chocolate melts into sweet, milky pockets that echo the tres leches itself. Keep to the amount given — between the condensed milk and the caramel, this cake does not need help getting sweeter.
Candied Orange Peel
27 g candied orange peel (15%), finely chopped. Add it to the batter at the final mix. Orange and coffee sound unlikely until you taste them together: the citrus oils lift the espresso, brighten the caramel, and give the soft crumb small chewy bites of contrast. Chop it fine. Big pieces bully a forkful; fine pieces perfume the whole slice.
Toasted Pecans
22 g toasted pecans (12%), chopped coarse. Do not bake these in and do not let them anywhere near the soak. Scatter them over the whipped cream with the caramel drizzle, right before serving. A soaked cake has no crunch anywhere, and that is the one texture it misses. Toasted pecans on top fix it in a single bite, and their warm, buttery flavor belongs with caramel completely.
Cocoa Nibs
18 g cocoa nibs (10%). Sprinkle them over the whipped cream alongside the caramel, or fold half into the batter and keep half for the top. Nibs give you chocolate at its most honest — bitter, crunchy, and unsweetened — which is exactly the counterweight a cup of caramel sauce needs. The ones on top stay crisp; the ones in the batter soften slightly but keep their bite.
Variations
Vanilla latte cake. Halve the espresso powder in the soak, to 1 tablespoon, and keep everything else the same. The coffee steps back from headline to background, the vanilla and caramel come forward, and the cake tastes like the milky drink instead of the double shot. This is the version to make for people who claim they do not like coffee desserts.
Double caramel. Drizzle a thin layer of caramel over the chilled, soaked cake before the whipped cream goes on, then drizzle again over the top as the recipe directs, and do not skip the recipe's optional pinch of flaky sea salt. You get caramel in two places — hidden and rich underneath, glossy on top — and the salt keeps the whole thing in balance.
Strong espresso soak. Use the recipe's other option: swap the espresso powder for ¼ cup of strong brewed espresso, and make it genuinely strong. The recipe is blunt that coffee gets diluted by all that dairy — this version answers with a deeper, darker soak that stands up to the caramel.
What to Pair It With
A small black coffee. It sounds like doubling down, and it is, in the best way. A plain, unsweetened cup cuts through the condensed milk and cream and makes the coffee already in the cake taste clearer rather than louder.
Fresh berries on the side. A handful of raspberries or sliced strawberries next to a chilled square does the same job as the tart cherries baked in — bright acidity against a very creamy plate. Serve them plain; the cake has the sugar covered.
After a spicy meal. This is the classic tres leches moment and this cake earns it. Serve chilled squares after anything with real heat — the cold, milky soak and whipped cream cool everything down, and the caramel feels like a proper ending.
A cold glass of milk. For the second square eaten standing in front of the open fridge, which this recipe practically predicts. Cold milk keeps the coffee and caramel tasting fresh instead of rich on rich.
Ready to Bake It?
Every idea above starts from the same beginner-friendly cake — no complicated techniques, just a tender batter, a slow pour, and the patience to let it chill properly. Get the full recipe — the exact soak, the whipped cream, and the tips for pouring slowly so the cake saturates instead of going soggy.
And if your starter needs to exist first — or the one in your fridge has gone quiet — ours is a flaked dehydrated starter that ships free in Canada, the US and the UK with an activation guarantee, so your baking starts from a culture that actually wakes up and gets to work.
Questions? Just message us — we'll get back to you, we promise. No AI chatbots here, just real people who bake sourdough every day.