Preheat your oven to 220°C/200°C fan/gas mark 7.

Chop the potatoes into 2cm chunks (no need to peel).

Pop them onto a large baking tray. Drizzle with oil, season with salt and pepper, sprinkle over the mixed herbs, then toss to coat. Spread out in a single layer. TIP: Use two baking trays if necessary.

When the oven is hot, roast on the top shelf until golden, 25-35 mins. Turn halfway through.

Meanwhile, pop the garlic (unpeeled) into a small piece of foil with a drizzle of oil and scrunch to enclose it.

Place the parcel on a baking tray and bake on the middle shelf until soft, 10-12 mins. 

In the meantime, zest and halve the lemon.

When the garlic has roasted, remove the parcel from the baking tray and set aside to cool slightly, 2-3 mins. 

Line the (now empty) baking tray with baking paper and lay on the basa fillets. Season with salt and pepper, then sprinkle over the lemon zest. 

When the potatoes have 10-12 mins remaining, bake the basa on the middle shelf for the same amount of time until the fish is cooked. IMPORTANT: Wash your hands and equipment after handling raw fish. It's cooked when opaque in the middle.

Meanwhile, finely chop the capers and parsley (stalks and all), then add to a medium bowl.

Add half the lemon juice, the sugar and olive oil for the salsa (see pantry for both amounts). Season with salt and pepper, then mix together.

Once the garlic has cooled, cut the end with scissors, squeeze it out of the skin and mash with a fork. Stir it through the salsa verde, then set aside.

Squeeze the remaining lemon juice into a medium bowl. Pour in the olive oil for the dressing (see pantry for amount), season with salt and pepper, then stir well to combine.

Cut the tomato into 1cm chunks. Add the tomato to the bowl of dressing and stir to combine. 

When the fish and potatoes are almost cooked, toss the baby leaves with tomatoes and dressing. TIP: Don't add the leaves too early or they'll go soggy.

When everything's ready, share the basa, herby roast potatoes and salad between plates. 

Spoon the salsa verde over the fish to finish.