This sweet French pea soup is born from the petits pois à la française vegetable dish, consisting of peas, onion and lettuce, lightly sweetened in a buttery broth.
Melt the butter in a frying pan, add the onion and fry over a medium heat for a few minutes. Add the caster sugar and bacon strips and continue to fry until just cooked. Remove the pan from the heat.
While frying the onion and bacon, cook the peas in a large pan of boiling salted water for a few minutes until tender. Drain away the majority of the water, leaving