Saute carrots, celery and jalapenos in butter until tender. Add flour slowly to the vegetabless; whisk frequnetly for about 6 minutes. Add stock; slowly whisking while pouring. Simmer for about 25 minutes. Remove soup from heat and whisk in cheese, a small amount at a time until mixture is smooth. Blend in cream. Add Worcestershire sauce, mustard,= beer and Parmesan cheese. Whisk until well blended. Add ham and scallions. Season with salt and hot sauce. Note: For a thinner soup, add more stock if desired.