Bahan lainnya:
2 buah bawang bombay ukuran sedang
250 gr jamur swiss brown
3 siung bawang putih
5 lembar bay leaf
3 sdm mentega tawar
200 ml cream / sour cream
1 sdm air perasan lemon atau 80 ml white wine / shake
1 sdm mustard, opsional
⅓ sdt garam
¼ sdt lada hitam
2 sdm saus tomat
2 buah pickled gherkins, opsional
500 ml air