BritishMedium · Hot
Toast slathered with butter and crowned with a fiercely flavored tomato jam that cuts through the richness like a well-placed insult. No velvet ropes required.
10 min
25 min
35 min
Method
Combine chopped tomato, white wine vinegar, white sugar, and salt in a saucepan over medium heat. Stir to combine.
Bring to a gentle boil, then reduce heat to medium-low. Simmer, stirring occasionally, for 20-25 minutes until the mixture thickens significantly and loses most of its liquid. It should be the consistency of thick relish.
Remove from heat and stir in the sharp mustard. Taste and adjust salt if needed. The jam should be tangy, sweet, and assertively sharp. Let cool slightly before serving.
Heat a frying pan over medium-high heat. Spread softened butter generously on both sides of each bread slice.
Nutri-Score
Estimated nutrition
Grade pending · 100% ingredient coverage
Calories
372
per serving
Protein
8g
Carbs
45g
Fat
19g
Sat. fat
12g
Fiber
6g
Sodium
859mg
Nutri-Score is a general nutritional-balance guide, not medical or dietary advice.
Environmental impact
Low impact
A–E · lower is better · includes estimates
kg CO2e
0.8
per serving
Water
0.4m³
Land
15Pt
Runoff
0.05g P
Tomato, roughly chopped drives 62% of this recipe’s estimated footprint.
Carbon from Poore & Nemecek 2018; water, land & runoff from Agribalyse — modelled averages for comparing recipes, not a measurement of your groceries.
Flavor Profile
Umami
Sweet
Salty
Sour
Bitter
Spicy
Textures
Aromas
Kitchen Equipment
Techniques
Safety & Storage
Cooking Temperature
Simmer tomato jam over medium-low heat for 20-25 minutes until mixture thickens significantly and loses most liquid. Toast buttered bread at medium-high heat for 2-3 minutes per side until golden brown and crisp.
Cross Contamination
Avoid using the same spatula or utensil for both jam and butter if serving to allergen-sensitive individuals. Clean all equipment thoroughly between uses.
Storage
Transfer cooled tomato jam to an airtight container and refrigerate promptly. Consume leftover jam within 5-7 days. Buttered toast is best consumed immediately and should not be stored.
Shelf Life
Homemade tomato jam without preservatives has a shelf life of approximately 1 week refrigerated. Discard if mold, off-odor, or unusual texture develops.
Allergen Warning
Contains milk (dairy) and mustard. Individuals with mustard or dairy allergies should avoid this dish entirely. Cross-contact with other allergens may occur during preparation.
High Risk Population
Young children, elderly individuals, and immunocompromised persons should only consume freshly prepared jam that has been properly cooked to recommended temperatures.
Equipment Safety
Use heat-resistant utensils and protective oven mitts when handling pans heated to medium-high temperatures. Allow cookware to cool before washing.
Handling
Stir jam occasionally during simmering to prevent sticking or burning. Monitor jam consistency as sugar content can cause rapid browning or scorching.
Pro Tips
Technique
When the jam is nearly done, stand guard. The line between 'thick relish' and 'tomato leather' is crossed quickly, and I won't have you texting me about a mistake I warned you against.
Substitution
Any ripe tomato works here—vine tomatoes, Roma, even those underripe ones you've been ignoring. The acid and sugar do the heavy lifting, not the variety.
Time Saver
Make the jam while your coffee brews. By the time you've poured a second cup and complained about the morning, you'll have something worth spreading.
From the chef
This is what happens when you stop trying to impress anyone and start cooking for yourself. The jam simmers down to something that actually tastes like a tomato—tangy, sweet, and sharp enough to cut through the butter like a well-placed truth. No velvet ropes required, no reservation needed, just bread and honest food before noon.
Source: generated · June 9, 2026