While state-of-the-art large language models (LLMs) show great potential for automating various Behavioral-Driven Development (BDD) related tasks, such as test generation, smaller models depend on high-quality data, which are challenging to find in sufficient quantity. To address this challenge, we adapt the SELF-INSTRUCT method to generate a large synthetic dataset from a small set of human-written high-quality scenarios. We evaluate the impact of the initial seeded scenarios’ quality on the generated scenarios by generating two synthetic datasets: one from 175 high-quality seeds and one from 175 seeds that did not meet all quality criteria. We performed a qualitative analysis using state-of-the-art quality criteria and found that the quality of seeds does not significantly influence the generation of complete and essential scenarios. However, it impacts the scenarios’ capability to focus on a single action and outcome and their compliance with Gherkin syntactic rules. During our evaluation, we also found that while raters agreed on whether a scenario was of high quality or not, they often disagreed on individual criteria, indicating a need for quality criteria easier to apply in practice.