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Potage Saint-Germain — Classical Split Pea Soup

Potage Saint-Germain is the definitive French pea soup — a vibrant green purée of split or fresh peas that carries the name of the Parisian suburb famous for its market gardens. In its highest expression, this potage is made with fresh garden peas in season, but the year-round version uses dried split peas, rehydrated and simmered with aromatics into a thick, nourishing potage that has sustained French households for centuries. For the dried pea version: soak 400g of green split peas in cold water for 2-4 hours (or overnight), then drain. In a heavy pot, sweat 100g of diced onion, 50g of diced carrot, and 50g of diced celery in 40g of butter until soft, about 8 minutes. Add the peas, 1.5 litres of light ham or chicken stock, a bouquet garni (thyme, bay, parsley stalks), and a ham hock or piece of smoked bacon — this smoky, porcine element is traditional and essential to the soup's character. Bring to a simmer, skim thoroughly, and cook gently for 60-90 minutes until the peas have completely dissolved. Remove the ham hock and bouquet garni, then purée through a moulin-légumes or blender. The consistency should be thick — Saint-Germain is a potage lié (bound soup), heartier than a crème or velouté — but it should still flow from the ladle without plopping. Adjust with stock if necessary. Finish with 40g of cold butter and season with salt (carefully — the ham contributes salt) and pepper. The classical garnish is small croûtons fried in butter and, if available, a scattering of fresh mint leaves. For the fresh pea version (potage Saint-Germain aux petits pois frais), blanch 800g of shelled peas briefly, purée with a lighter stock, and finish with cream — the result is a stunningly vivid green, the very colour of spring.

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ServesFour portions
Total2 hours 30 minutes (including soaking)
Sourced0of 11 in BC
Cook
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I

The Market List

The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.

400 g
green split peas
soaked in cold water 2–4 hours or overnight, then drained
Not yet stocked in British Columbia
100 g
onion
diced
Your own market
50 g
carrot
diced
Your own market
50 g
celery
diced
Your own market
40 g
unsalted butter
for sweating the mirepoix
Your own market
1.5 litres
light ham or chicken stock
plus extra to adjust consistency
Your own market
1
ham hock or piece of smoked bacon
floated on top of the peas during cooking
Your own market
1
bouquet garni
thyme, bay leaf, parsley stalks
Not yet stocked in British Columbia
40 g
cold unsalted butter
cut into small pieces, for finishing
Your own market
For the garnish
50 g
day-old bread
cut into small dice for croûtons, fried in butter
Your own market
1 small handful
fresh mint leaves
scattered at service if available
Not yet stocked in British Columbia
II

The Method

1
Soak the split peas in cold water for 2–4 hours, or overnight. Drain thoroughly before use. The peas are ready when they have swollen evenly and no hard centres remain when one is pressed between finger and thumb.
2
In a heavy pot over moderate heat, melt 40 g of butter and sweat the diced onion, carrot, and celery for approximately 8 minutes, stirring occasionally. The vegetables are done when they are completely soft and translucent with no colour taken.
3
Add the drained peas, stock, and bouquet garni. Float the ham hock on top of the peas — keeping it off the bottom of the pot prevents the peas from scorching beneath it. Bring to a gentle simmer.
4
Skim the surface thoroughly as the soup comes to temperature, removing all foam and impurities. The surface should be clear before the lid is partially set.
5
This is where the dish lives or dies: maintain a bare, steady simmer — never a rolling boil — for 60–90 minutes, until the split peas have completely dissolved into the stock. A vigorous boil will cause the peas to stick and scorch on the bottom and will drive off the stock unevenly. The soup is ready when no whole or half peas remain visible and the liquid has thickened considerably.
6
Remove and set aside the ham hock and bouquet garni. Pass the soup through a moulin-légumes or blender until smooth. Return it to the rinsed pot. Shred the meat from the hock and reserve some for garnish if desired.
7
Assess the consistency: Saint-Germain is a potage lié — it must flow from the ladle in a steady stream without plopping. If too thick, loosen with additional stock. Reheat gently over low heat.
8
Off the heat, beat in the 40 g of cold butter in small pieces until fully incorporated. Season with pepper. Add salt with restraint — the ham hock will have contributed significant salt to the broth already. Taste the soup, not the ladle, to judge the seasoning.
9
Fry the diced bread in butter until golden and crisp on all sides. The croûtons are ready when they are uniformly amber and hold their crunch when pressed.
10
Ladle the soup into warmed bowls. Scatter butter-fried croûtons and, if available, fresh mint leaves over the surface. Any reserved shredded hock meat may be placed in the centre before service.
III

Quality Hierarchy

01
Reserve — Potage Saint-Germain aux petits pois frais: 800 g of freshly shelled garden peas, blanched briefly and shocked in an ice bath to preserve their chlorophyll, then puréed with a light stock and finished with cream. A stunningly vivid green; the version the entry calls the soup's highest expression.
02
Estate — Dried green split peas of a single season's harvest, a properly made light ham stock, and a quality smoked ham hock — the full classical preparation as Escoffier intends it.
03
Market — Reliable dried split peas, a decent commercial chicken stock, and a piece of smoked bacon in place of a hock. The result is sound and nourishing, though it lacks the depth that a proper ham stock and hock provide.
04
House — Dried split peas without soaking — acceptable if simmering time is extended — with a stock cube and no ham element. The soup will be dull and one-dimensional, and risks the army-canteen result — against.
IV

Sensory Tests

◇Touch. A soaked pea pressed between finger and thumb yields completely, with no hard or chalky centre remaining.
◇Sight. No whole or partial split peas are visible in the pot after 60–90 minutes of simmering; the liquid has thickened substantially under its own starch.
◇Sight. The finished, buttered soup flows from the ladle in a steady, unbroken stream — thick but fluid, never dropping in a mass.
◇Smell. The pot carries a deep, smoky, leguminous aroma throughout cooking; any sharp or acrid note signals scorching and the bottom of the pot must be checked immediately.
◇Touch. Butter-fried croûtons hold their crunch when pressed lightly — they do not compress or feel damp at their centres.
◇Where it lives or dies. The soup must hold a bare, unbroken simmer for the full 60–90 minutes; a rolling boil scorches the peas and ruins the purée, while insufficient cooking leaves the split peas grainy and the soup thin.
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VI

What to Pour

The pairing
Charles Joguet Chinon Clos de la Dioterie
Domaine Charles Joguet · Chinon
Not yet stocked in British Columbia
Wine
From British Columbia
Fort Berens Riesling
Fort Berens Estate Winery · Lillooet
Not yet stocked in British Columbia
Wine
Without alcohol
GT's Synergy Organic Kombucha — Gingerade
Not yet stocked in British Columbia
Non-alcoholic

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The whole pairing
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Where the dish comes from and how it came to be — on every recipe.
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