Recipe: creamy horseradish salad dressing

 Ingredients for one large helping or two moderate ones
1 tbsp fat free plain Greek (or other) yogurt, runnier if you want a more pourable thickness
1/2 tbsp low fat mayo (1/2 syn)
1/4 tsp dijon or grain mustard
1/2 tbsp lemon juice
1/2 tsp olive oil (one syn)
1/4 tsp horseradish sauce
1/8 tsp sweetener
salt and pepper to taste
1/2 tsp milk to slacken, if wanted

Method
Measure out all ingredients into a small pot or jar and stir well.  Slacken with milk if needed (or use a runnier yogurt).
Store in the fridge until needed.

SW:  the oil is one syn and the mayo is half a syn.  The mustard and the horseradish together come to less than half a syn so you can safely disregard them, especially if it is used for more than one helping.  Ditto for the milk which is half a syn for 20mls, although, if you want to, count all three for one syn which is an over-estimate.
So if you scoff the whole lot, it's only two syns.  I found half of it more than enough

It's quite a punchy dressing, a bit like a caesar dressing and I will be using it like that, perhaps with the addition of a little bit of finely grated parmesan.  It's worth adding a little bit of oil as it does enhance the texture and flavour and I am really, really pleased with the end result.