This is our favorite topping for salad and sometimes even roasted beets.
Start by dealing with the anchovy if you are working with filet. I take a medium knife and use it to chop and smash it with the edge as I go. I'm basically creating my own paste with it. Add to a medium mixing bowl.
Add garlic, ginger, mustard, dill, pepper, lemon juice and vinegar. Give a whisk to combine everything.
Add the yogurt next and combine.
Finally, slowly drizzle in the oil. Take this slow so it incorporates well.
When you are done assembling this, you may find it too sweet. This is going to depend on the yogurt you use. If you find that to be the case, add in another 1/2 tsp of vinegar until the flavor balances. If it's not salty enough for you, add a touch more anchovy.
This will keep well in the fridge for over a week although it never lasts that long with us. Sometimes you might see some slight separation, that's normal. Just give the jar a good shake before using.