Cook potatoes in boiling water until tender, adding corn for final 5 mins, then drain and allow to cool a little.
For the dressing, mix the vinegar, oil, chives, capers, basil and some seasoning.
Heat grill to high. Rub a little dressing on the salmon and cook, skinned-
Top with the salmon, then drizzle over the remaining dressing.
* Sweetcorn is listed as a moderate fructan. Do not consume more than half a cob, if new to the diet it may be best to omit.