That last tablespoon clinging to the bottom of the mustard jar might seem useless, but it’s actually a flavour-packed secret weapon. From simple yet flavourful vinaigrettes to lip-smacking gravy, you can turn that humble leftover mustard into something surprisingly delicious. Here are five clever ways to make the most of every last dollop.
5 Clever uses for leftover mustard
1. Easy salad dressing
What better container for a salad dressing than a near-empty glass jar? All you have to do is toss in the ingredients and shake them up until combined. The salad dressing will keep for up to a week in the fridge, perfect for whipping up a quick side salad. Try the jar method when making the honey mustard dressing for this potato and sweet potato salad. Or stick to the basics with this super simple salad dressing.
2. Make a marinade
Mustard makes up the foundations of many a flavour-packed marinade, especially one made specifically for the braai. Not only does the mustard add a much-needed acidic punch to otherwise rich meats, but it also helps to tenderise them. Use a splash of hot water to loosen those last bits of mustard in the jar and add to this sticky, sweet-and-sour braai marinade.
3. Make a sandwich spread
That last tablespoon of mustard is perfect to use up when indulging in a cold meat sandwich. Instead of spooning out the mustard, add a splash of water (to help loosen the mustard), some mayo, and seasoning to the jar and shake things up to create a creamy and tangy spread. Use the mustard mayo spread to complete this delicious grilled mortadella sandwich with quickled onions and pesto.
Grilled mortadella sandwich with quickled red onions, pesto and mustard mayo
4. Use to thicken pan sauces
One of the best and most flavourful ways to thicken pan sauces is by adding a spoonful of mustard after you’ve deglazed the pan. Not only does the mustard flavour boost the jus, but its acidity also helps emulsify the sauce and thicken it up. Simply splash some hot water (or, better yet, stock) into a near-empty mustard jar and shake to loosen the contents. Whisk this into your pan juices and simmer until thickened, finishing the sauce with a blob of butter or a splash of fresh cream.
5. Pair with potatoes
Whether you’re a fan of roast potatoes, potato salad, or a classic mash, most mustards are too. Finish that last spoonful of mustard by adding it to your next potato dish: think mustardy potato salad for your next braai, a mustardy twist on scalloped potatoes, or mustardy potato mash to accompany a perfectly grilled steak.
Next time you’re tempted to toss that mustard jar, don’t. That last spoonful of stubborn mustard has tons of flavour to offer. These quick ideas save waste, add punch to your cooking, and make use of something you already have. A win-win in our books!
