Chop the shallots into a fine dice and cook in the butter until soft.
When soft add the chopped garlic and 1 glass of the white wine and reduce slightly. This can be done up to ⅔ days in advance, cooled and kept in a sealed jar.
Place a large pan on a medium heat and allow to get hot, then add the clams and the remaining
white wine.
When the clams all start to open add the cooked spaghetti/linguine to the same pan.
Combine and then add the double cream and the cooked shallots.
After 2-3 mins, when it is all warmed through, check the seasoning and adjust if necessary and add some chopped parsley.
Serve in hot bowls and finish with the rest of the chopped parsley.
Recipe by appetite magazine at https://www.appetitemag.co.uk/pasta-vongole/