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Syns & Slimming World

How Many Syns in Gravy (Bisto made up)?

By Jenny Updated

Gravy is the unsung hero of a proper British dinner, and the good news for anyone on Slimming World is that a ladleful of Bisto made up to packet instructions will set you back surprisingly few Syns. The standard granules whisked with hot water give you roughly 1 Syn per 100ml of finished gravy, which is generous when you consider how much flavour a glug brings to a plate of roast chicken, mashed potato, or a Sunday joint. The reason it stays low is simple: the granules are diluted heavily, so the fat and starch that drive the calorie count are spread across a large volume of liquid. Pour with a sensible hand and you can dress an entire roast for 2 Syns without blinking.

Where people come unstuck is the jug. A casual pour at the table easily tips past 150ml, and if you go back for seconds on a Yorkshire pudding you can quietly spend 4 or 5 Syns on gravy alone. Measure into a small jug before you sit down, or use a tablespoon ladle, and the numbers stay honest. The Best version, Bisto Favourite, and the reduced-salt range all sit in roughly the same Syn bracket per 100ml, though the chicken and onion variants can drift a touch higher or lower depending on the fat content. Always weigh or measure rather than eyeball.

If you want gravy that costs nothing on a green day, a homemade version built from Bovril or a Marmite-spiked stock with cornflour and pan juices (fat skimmed) can come in close to free. But for ease, flavour, and that proper Sunday-dinner taste, made-up Bisto is one of the better Syn investments on the plan. Pair it with Speed veg and lean protein and you have a satisfying roast for a single-figure Syn total.

Per serving

Gravy (Bisto made up) — syn values

Portion Syns kcal
1 tbsp (15ml) 0.5 4
50ml made-up 0.5 14
100ml made-up 1 27
150ml made-up 1.5 41
200ml serving 2 54
250ml generous ladle 2.5 68
300ml jug 3 81
Syn values are based on Slimming World 2026 guidance. Always double-check with your group or app.

Numbers at a glance

Quick auto-calculated stats for Gravy (Bisto made up).

3%
of a 15-syn day
based on standard daily allowance
8kcal / syn
calories per syn
the lower, the more 'value' your syns get
7
portion sizes covered
from snack to full serving
0.5syns
cheapest portionat 1 tbsp (15ml)
smallest serving

Brand breakdown

Popular supermarket and branded products, with the portion-level syn count.

Brand Product Portion Syns kcal
Bisto Original Gravy Granules (made up) 100ml 1 27
Bisto Best Rich Roast Beef Gravy (made up) 100ml 1.5 32
Bisto Favourite Gravy Granules (made up) 100ml 1 28
Bisto Reduced Salt Gravy Granules (made up) 100ml 1 26
Bisto Chicken Gravy Granules (made up) 100ml 1 25
Bisto Onion Gravy Granules (made up) 100ml 1 27
Bisto Vegetable Gravy Granules (made up) 100ml 1 24
Bisto Turkey Gravy Granules (made up) 100ml 1 26

Lower-syn sauce alternatives

Food Portion Syns vs current
Fish Sauce 1 tsp (5ml) FREE −0.5 syns
Soy Sauce 1 tsp (5ml) FREE −0.5 syns
Stock Cube 1 cube (Knorr / Oxo) FREE −0.5 syns
Tomato Puree 1 tbsp (15g) FREE −0.5 syns
Wine Vinegar 1 tbsp (15ml) FREE −0.5 syns

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